Optional KhtmlOptional KhtmlThe box-direction CSS property specifies whether a box lays out its contents normally (from the top or left edge), or in reverse (from the bottom or right edge).
Syntax: normal | reverse | inherit
Initial value: normal
Optional KhtmlThe -moz-box-flex and -webkit-box-flex CSS properties specify how a -moz-box or -webkit-box grows to fill the box that contains it, in the direction of the containing box's layout.
Syntax: <number>
Initial value: 0
Optional KhtmlThe box-flex-group CSS property assigns the flexbox's child elements to a flex group.
Syntax: <integer>
Initial value: 1
Optional KhtmlThe box-lines CSS property determines whether the box may have a single or multiple lines (rows for horizontally oriented boxes, columns for vertically oriented boxes).
Syntax: single | multiple
Initial value: single
Optional KhtmlThe box-ordinal-group CSS property assigns the flexbox's child elements to an ordinal group.
Syntax: <integer>
Initial value: 1
Optional KhtmlThis is a property of the original CSS Flexible Box Layout Module draft, and has been replaced by a newer standard. See flexbox for information about the current standard.
Syntax: horizontal | vertical | inline-axis | block-axis | inherit
Initial value: inline-axis (horizontal in XUL)
Optional KhtmlThe -moz-box-pack and -webkit-box-pack CSS properties specify how a -moz-box or -webkit-box packs its contents in the direction of its layout. The effect of this is only visible if there is extra space in the box.
Syntax: start | center | end | justify
Initial value: start
Optional KhtmlThe line-break CSS property sets how to break lines of Chinese, Japanese, or Korean (CJK) text when working with punctuation and symbols.
Syntax: auto | loose | normal | strict | anywhere
Initial value: auto
Optional KhtmlThe opacity CSS property sets the opacity of an element. Opacity is the degree to which content behind an element is hidden, and is the opposite of transparency.
Syntax: <alpha-value>
Initial value: 1.0
Optional KhtmlThe **user-select** CSS property controls whether the user can select text. This doesn't have any effect on content loaded as chrome, except in textboxes.
Syntax: auto | text | none | contain | all
Initial value: auto
Optional MozThe animation shorthand CSS property applies an animation between styles. It is a shorthand for animation-name, animation-duration, animation-timing-function, animation-delay, animation-iteration-count, animation-direction, animation-fill-mode, and animation-play-state.
Syntax: <single-animation>#
Optional MozThe animation-delay CSS property specifies the amount of time to wait from applying the animation to an element before beginning to perform the animation. The animation can start later, immediately from its beginning, or immediately and partway through the animation.
Syntax: <time>#
Initial value: 0s
Optional MozThe animation-direction CSS property sets whether an animation should play forward, backward, or alternate back and forth between playing the sequence forward and backward.
Syntax: <single-animation-direction>#
Initial value: normal
Optional MozThe animation-duration CSS property sets the length of time that an animation takes to complete one cycle.
Syntax: <time>#
Initial value: 0s
Optional MozThe animation-fill-mode CSS property sets how a CSS animation applies styles to its target before and after its execution.
Syntax: <single-animation-fill-mode>#
Initial value: none
Optional MozThe animation-iteration-count CSS property sets the number of times an animation sequence should be played before stopping.
Syntax: <single-animation-iteration-count>#
Initial value: 1
Optional MozThe animation-name CSS property specifies the names of one or more @keyframes at-rules describing the animation or animations to apply to the element.
Syntax: [ none | <keyframes-name> ]#
Initial value: none
Optional MozThe animation-play-state CSS property sets whether an animation is running or paused.
Syntax: <single-animation-play-state>#
Initial value: running
Optional MozThe animation-timing-function CSS property sets how an animation progresses through the duration of each cycle.
Syntax: <easing-function>#
Initial value: ease
Optional MozThe **appearance** CSS property is used to display an element using platform-native styling, based on the operating system's theme. The -moz-appearance and -webkit-appearance properties are non-standard versions of this property, used (respectively) by Gecko (Firefox) and by WebKit-based (e.g., Safari) and Blink-based (e.g., Chrome, Opera) browsers to achieve the same thing. Note that Firefox and Edge also support -webkit-appearance, for compatibility reasons.
Syntax: none | button | button-arrow-down | button-arrow-next | button-arrow-previous | button-arrow-up | button-bevel | button-focus | caret | checkbox | checkbox-container | checkbox-label | checkmenuitem | dualbutton | groupbox | listbox | listitem | menuarrow | menubar | menucheckbox | menuimage | menuitem | menuitemtext | menulist | menulist-button | menulist-text | menulist-textfield | menupopup | menuradio | menuseparator | meterbar | meterchunk | progressbar | progressbar-vertical | progresschunk | progresschunk-vertical | radio | radio-container | radio-label | radiomenuitem | range | range-thumb | resizer | resizerpanel | scale-horizontal | scalethumbend | scalethumb-horizontal | scalethumbstart | scalethumbtick | scalethumb-vertical | scale-vertical | scrollbarbutton-down | scrollbarbutton-left | scrollbarbutton-right | scrollbarbutton-up | scrollbarthumb-horizontal | scrollbarthumb-vertical | scrollbartrack-horizontal | scrollbartrack-vertical | searchfield | separator | sheet | spinner | spinner-downbutton | spinner-textfield | spinner-upbutton | splitter | statusbar | statusbarpanel | tab | tabpanel | tabpanels | tab-scroll-arrow-back | tab-scroll-arrow-forward | textfield | textfield-multiline | toolbar | toolbarbutton | toolbarbutton-dropdown | toolbargripper | toolbox | tooltip | treeheader | treeheadercell | treeheadersortarrow | treeitem | treeline | treetwisty | treetwistyopen | treeview | -moz-mac-unified-toolbar | -moz-win-borderless-glass | -moz-win-browsertabbar-toolbox | -moz-win-communicationstext | -moz-win-communications-toolbox | -moz-win-exclude-glass | -moz-win-glass | -moz-win-mediatext | -moz-win-media-toolbox | -moz-window-button-box | -moz-window-button-box-maximized | -moz-window-button-close | -moz-window-button-maximize | -moz-window-button-minimize | -moz-window-button-restore | -moz-window-frame-bottom | -moz-window-frame-left | -moz-window-frame-right | -moz-window-titlebar | -moz-window-titlebar-maximized
Initial value: none (but this value is overridden in the user agent CSS)
Optional MozThe backface-visibility CSS property sets whether the back face of an element is visible when turned towards the user.
Syntax: visible | hidden
Initial value: visible
Optional MozThe background-clip CSS property sets whether an element's background extends underneath its border box, padding box, or content box.
Syntax: <box>#
Initial value: border-box
Optional MozThe box-decoration-break CSS property specifies how an element's fragments should be rendered when broken across multiple lines, columns, or pages.
Syntax: slice | clone
Initial value: slice
Optional MozThe background-origin CSS property sets the background's origin: from the border start, inside the border, or inside the padding.
Syntax: <box>#
Initial value: padding-box
Optional MozThe background-size CSS property sets the size of the element's background image. The image can be left to its natural size, stretched, or constrained to fit the available space.
Syntax: <bg-size>#
Initial value: auto auto
Optional MozThe -moz-binding CSS property is used by Mozilla-based applications to attach an XBL binding to a DOM element.
Syntax: <url> | none
Initial value: none
Optional MozIn Mozilla applications like Firefox, the -moz-border-bottom-colors CSS property sets a list of colors for the bottom border.
Syntax: <color>+ | none
Initial value: none
Optional MozThe border-inline-end-color CSS property defines the color of the logical inline-end border of an element, which maps to a physical border color depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-color, border-right-color, border-bottom-color, or border-left-color property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-color'>
Initial value: currentcolor
Optional MozThe border-inline-end-style CSS property defines the style of the logical inline end border of an element, which maps to a physical border style depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-style, border-right-style, border-bottom-style, or border-left-style property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-style'>
Initial value: none
Optional MozThe border-inline-end-width CSS property defines the width of the logical inline-end border of an element, which maps to a physical border width depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-width, border-right-width, border-bottom-width, or border-left-width property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-width'>
Initial value: medium
Optional MozThe border-image CSS property draws an image around a given element. It replaces the element's regular border.
Syntax: <'border-image-source'> || <'border-image-slice'> [ / <'border-image-width'> | / <'border-image-width'>? / <'border-image-outset'> ]? || <'border-image-repeat'>
Optional MozIn Mozilla applications like Firefox, the -moz-border-left-colors CSS property sets a list of colors for the left border.
Syntax: <color>+ | none
Initial value: none
Optional MozThe border-radius CSS property rounds the corners of an element's outer border edge. You can set a single radius to make circular corners, or two radii to make elliptical corners.
Syntax: <length-percentage>{1,4} [ / <length-percentage>{1,4} ]?
Optional MozThe border-bottom-left-radius CSS property rounds the bottom-left corner of an element by specifying the radius (or the radius of the semi-major and semi-minor axes) of the ellipse defining the curvature of the corner.
Syntax: <length-percentage>{1,2}
Initial value: 0
Optional MozThe border-bottom-right-radius CSS property rounds the bottom-right corner of an element by specifying the radius (or the radius of the semi-major and semi-minor axes) of the ellipse defining the curvature of the corner.
Syntax: <length-percentage>{1,2}
Initial value: 0
Optional MozThe border-top-left-radius CSS property rounds the top-left corner of an element by specifying the radius (or the radius of the semi-major and semi-minor axes) of the ellipse defining the curvature of the corner.
Syntax: <length-percentage>{1,2}
Initial value: 0
Optional MozThe border-top-right-radius CSS property rounds the top-right corner of an element by specifying the radius (or the radius of the semi-major and semi-minor axes) of the ellipse defining the curvature of the corner.
Syntax: <length-percentage>{1,2}
Initial value: 0
Optional MozIn Mozilla applications like Firefox, the -moz-border-right-colors CSS property sets a list of colors for the right border.
Syntax: <color>+ | none
Initial value: none
Optional MozThe border-inline-start-color CSS property defines the color of the logical inline start border of an element, which maps to a physical border color depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-color, border-right-color, border-bottom-color, or border-left-color property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-color'>
Initial value: currentcolor
Optional MozThe border-inline-start-style CSS property defines the style of the logical inline start border of an element, which maps to a physical border style depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-style, border-right-style, border-bottom-style, or border-left-style property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-style'>
Initial value: none
Optional MozIn Mozilla applications like Firefox, the -moz-border-top-colors CSS property sets a list of colors for the top border.
Syntax: <color>+ | none
Initial value: none
Optional MozThe box-align CSS property specifies how an element aligns its contents across its layout in a perpendicular direction. The effect of the property is only visible if there is extra space in the box.
Syntax: start | center | end | baseline | stretch
Initial value: stretch
Optional MozThe box-direction CSS property specifies whether a box lays out its contents normally (from the top or left edge), or in reverse (from the bottom or right edge).
Syntax: normal | reverse | inherit
Initial value: normal
Optional MozThe -moz-box-flex and -webkit-box-flex CSS properties specify how a -moz-box or -webkit-box grows to fill the box that contains it, in the direction of the containing box's layout.
Syntax: <number>
Initial value: 0
Optional MozThe box-ordinal-group CSS property assigns the flexbox's child elements to an ordinal group.
Syntax: <integer>
Initial value: 1
Optional MozThis is a property of the original CSS Flexible Box Layout Module draft, and has been replaced by a newer standard. See flexbox for information about the current standard.
Syntax: horizontal | vertical | inline-axis | block-axis | inherit
Initial value: inline-axis (horizontal in XUL)
Optional MozThe -moz-box-pack and -webkit-box-pack CSS properties specify how a -moz-box or -webkit-box packs its contents in the direction of its layout. The effect of this is only visible if there is extra space in the box.
Syntax: start | center | end | justify
Initial value: start
Optional MozThe box-shadow CSS property adds shadow effects around an element's frame. You can set multiple effects separated by commas. A box shadow is described by X and Y offsets relative to the element, blur and spread radius, and color.
Syntax: none | <shadow>#
Initial value: none
Optional MozThe box-sizing CSS property sets how the total width and height of an element is calculated.
Syntax: content-box | border-box
Initial value: content-box
Optional MozThe column-count CSS property breaks an element's content into the specified number of columns.
Syntax: <integer> | auto
Initial value: auto
Optional MozThe column-fill CSS property controls how an element's contents are balanced when broken into columns.
Syntax: auto | balance | balance-all
Initial value: balance
Optional MozThe column-gap CSS property sets the size of the gap (gutter) between an element's columns.
Syntax: normal | <length-percentage>
Initial value: normal
Optional MozThe column-rule shorthand CSS property sets the width, style, and color of the line drawn between columns in a multi-column layout.
Syntax: <'column-rule-width'> || <'column-rule-style'> || <'column-rule-color'>
Optional MozThe column-rule-color CSS property sets the color of the line drawn between columns in a multi-column layout.
Syntax: <color>
Initial value: currentcolor
Optional MozThe column-rule-style CSS property sets the style of the line drawn between columns in a multi-column layout.
Syntax: <'border-style'>
Initial value: none
Optional MozThe column-rule-width CSS property sets the width of the line drawn between columns in a multi-column layout.
Syntax: <'border-width'>
Initial value: medium
Optional MozThe column-width CSS property sets the ideal column width in a multi-column layout. The container will have as many columns as can fit without any of them having a width less than the column-width value. If the width of the container is narrower than the specified value, the single column's width will be smaller than the declared column width.
Syntax: <length> | auto
Initial value: auto
Optional MozThe columns CSS shorthand property sets the number of columns to use when drawing an element's contents, as well as those columns' widths.
Syntax: <'column-width'> || <'column-count'>
Optional MozThe **-moz-context-properties** property can be used within privileged contexts in Firefox to share the values of specified properties of the element with a child SVG image.
Syntax: none | [ fill | fill-opacity | stroke | stroke-opacity ]#
Initial value: none
Optional MozThe non-standard -moz-float-edge CSS property specifies whether the height and width properties of the element include the margin, border, or padding thickness.
Syntax: border-box | content-box | margin-box | padding-box
Initial value: content-box
Optional MozThe font-feature-settings CSS property controls advanced typographic features in OpenType fonts.
Syntax: normal | <feature-tag-value>#
Initial value: normal
Optional MozThe font-language-override CSS property controls the use of language-specific glyphs in a typeface.
Syntax: normal | <string>
Initial value: normal
Optional MozThe -moz-force-broken-image-icon extended CSS property can be used to force the broken image icon to be shown even when a broken image has an alt attribute.
Syntax: 0 | 1
Initial value: 0
Optional MozThe hyphens CSS property specifies how words should be hyphenated when text wraps across multiple lines. It can prevent hyphenation entirely, hyphenate at manually-specified points within the text, or let the browser automatically insert hyphens where appropriate.
Syntax: none | manual | auto
Initial value: manual
Optional MozFor certain XUL elements and pseudo-elements that use an image from the list-style-image property, this property specifies a region of the image that is used in place of the whole image. This allows elements to use different pieces of the same image to improve performance.
Syntax: <shape> | auto
Initial value: auto
Optional MozThe margin-inline-end CSS property defines the logical inline end margin of an element, which maps to a physical margin depending on the element's writing mode, directionality, and text orientation. In other words, it corresponds to the margin-top, margin-right, margin-bottom or margin-left property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'margin-left'>
Initial value: 0
Optional MozThe margin-inline-start CSS property defines the logical inline start margin of an element, which maps to a physical margin depending on the element's writing mode, directionality, and text orientation. It corresponds to the margin-top, margin-right, margin-bottom, or margin-left property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'margin-left'>
Initial value: 0
Optional MozThe opacity CSS property sets the opacity of an element. Opacity is the degree to which content behind an element is hidden, and is the opposite of transparency.
Syntax: <alpha-value>
Initial value: 1.0
Optional MozThe -moz-orient CSS property specifies the orientation of the element to which it's applied.
Syntax: inline | block | horizontal | vertical
Initial value: inline
Optional MozThe font-smooth CSS property controls the application of anti-aliasing when fonts are rendered.
Syntax: auto | never | always | <absolute-size> | <length>
Initial value: auto
Optional MozThe outline CSS shorthand property set all the outline properties in a single declaration.
Syntax: [ <'outline-color'> || <'outline-style'> || <'outline-width'> ]
Optional MozThe outline-color CSS property sets the color of an element's outline.
Syntax: <color> | invert
Initial value: invert, for browsers supporting it, currentColor for the other
Optional MozIn Mozilla applications like Firefox, the -moz-outline-radius CSS shorthand property can be used to give an element's outline rounded corners.
Syntax: <outline-radius>{1,4} [ / <outline-radius>{1,4} ]?
Optional MozIn Mozilla applications, the -moz-outline-radius-bottomleft CSS property can be used to round the bottom-left corner of an element's outline.
Syntax: <outline-radius>
Initial value: 0
Optional MozIn Mozilla applications, the -moz-outline-radius-bottomright CSS property can be used to round the bottom-right corner of an element's outline.
Syntax: <outline-radius>
Initial value: 0
Optional MozIn Mozilla applications, the -moz-outline-radius-topleft CSS property can be used to round the top-left corner of an element's outline.
Syntax: <outline-radius>
Initial value: 0
Optional MozIn Mozilla applications, the -moz-outline-radius-topright CSS property can be used to round the top-right corner of an element's outline.
Syntax: <outline-radius>
Initial value: 0
Optional MozThe outline-style CSS property sets the style of an element's outline. An outline is a line that is drawn around an element, outside the border.
Syntax: auto | <'border-style'>
Initial value: none
Optional MozThe CSS outline-width property sets the thickness of an element's outline. An outline is a line that is drawn around an element, outside the border.
Syntax: <line-width>
Initial value: medium
Optional MozThe padding-inline-end CSS property defines the logical inline end padding of an element, which maps to a physical padding depending on the element's writing mode, directionality, and text orientation.
Syntax: <'padding-left'>
Initial value: 0
Optional MozThe padding-inline-start CSS property defines the logical inline start padding of an element, which maps to a physical padding depending on the element's writing mode, directionality, and text orientation.
Syntax: <'padding-left'>
Initial value: 0
Optional MozThe perspective CSS property determines the distance between the z=0 plane and the user in order to give a 3D-positioned element some perspective.
Syntax: none | <length>
Initial value: none
Optional MozThe perspective-origin CSS property determines the position at which the viewer is looking. It is used as the vanishing point by the perspective property.
Syntax: <position>
Initial value: 50% 50%
Optional Moz-moz-stack-sizing is an extended CSS property. Normally, a <xul:stack> will change its size so that all of its child elements are completely visible. For example, moving a child of the stack far to the right will widen the stack so the child remains visible.
Syntax: ignore | stretch-to-fit
Initial value: stretch-to-fit
Optional MozThe tab-size CSS property is used to customize the width of tab characters (U+0009).
Syntax: <integer> | <length>
Initial value: 8
Optional MozThe text-align-last CSS property sets how the last line of a block or a line, right before a forced line break, is aligned.
Syntax: auto | start | end | left | right | center | justify
Initial value: auto
Optional MozThe -moz-text-blink non-standard Mozilla CSS extension specifies the blink mode.
Syntax: none | blink
Initial value: none
Optional MozThe text-decoration-color CSS property sets the color of decorations added to text by text-decoration-line.
Syntax: <color>
Initial value: currentcolor
Optional MozThe text-decoration-line CSS property sets the kind of decoration that is used on text in an element, such as an underline or overline.
Syntax: none | [ underline || overline || line-through || blink ] | spelling-error | grammar-error
Initial value: none
Optional MozThe text-decoration-style CSS property sets the style of the lines specified by text-decoration-line. The style applies to all lines that are set with text-decoration-line.
Syntax: solid | double | dotted | dashed | wavy
Initial value: solid
Optional MozThe text-size-adjust CSS property controls the text inflation algorithm used on some smartphones and tablets. Other browsers will ignore this property.
Syntax: none | auto | <percentage>
Initial value: auto for smartphone browsers supporting inflation, none in other cases (and then not modifiable).
Optional MozThe transform-origin CSS property sets the origin for an element's transformations.
Syntax: [ <length-percentage> | left | center | right | top | bottom ] | [ [ <length-percentage> | left | center | right ] && [ <length-percentage> | top | center | bottom ] ] <length>?
Initial value: 50% 50% 0
Optional MozThe transform-style CSS property sets whether children of an element are positioned in the 3D space or are flattened in the plane of the element.
Syntax: flat | preserve-3d
Initial value: flat
Optional MozThe transition CSS property is a shorthand property for transition-property, transition-duration, transition-timing-function, and transition-delay.
Syntax: <single-transition>#
Optional MozThe transition-delay CSS property specifies the duration to wait before starting a property's transition effect when its value changes.
Syntax: <time>#
Initial value: 0s
Optional MozThe transition-duration CSS property sets the length of time a transition animation should take to complete. By default, the value is 0s, meaning that no animation will occur.
Syntax: <time>#
Initial value: 0s
Optional MozThe transition-property CSS property sets the CSS properties to which a transition effect should be applied.
Syntax: none | <single-transition-property>#
Initial value: all
Optional MozThe transition-timing-function CSS property sets how intermediate values are calculated for CSS properties being affected by a transition effect.
Syntax: <easing-function>#
Initial value: ease
Optional MozThe -moz-user-focus CSS property is used to indicate whether an element can have the focus.
Syntax: ignore | normal | select-after | select-before | select-menu | select-same | select-all | none
Initial value: none
Optional MozIn Mozilla applications, -moz-user-input determines if an element will accept user input.
Syntax: auto | none | enabled | disabled
Initial value: auto
Optional MozThe user-modify property has no effect in Firefox. It was originally planned to determine whether or not the content of an element can be edited by a user.
Syntax: read-only | read-write | write-only
Initial value: read-only
Optional MozThe **user-select** CSS property controls whether the user can select text. This doesn't have any effect on content loaded as chrome, except in textboxes.
Syntax: auto | text | none | contain | all
Initial value: auto
Optional MozThe -moz-window-dragging CSS property specifies whether a window is draggable or not. It only works in Chrome code, and only on Mac OS X.
Syntax: drag | no-drag
Initial value: drag
Optional MozThe -moz-window-shadow CSS property specifies whether a window will have a shadow. It only works on Mac OS X.
Syntax: default | menu | tooltip | sheet | none
Initial value: default
Optional OAnimationThe animation shorthand CSS property applies an animation between styles. It is a shorthand for animation-name, animation-duration, animation-timing-function, animation-delay, animation-iteration-count, animation-direction, animation-fill-mode, and animation-play-state.
Syntax: <single-animation>#
Optional OAnimationThe animation-delay CSS property specifies the amount of time to wait from applying the animation to an element before beginning to perform the animation. The animation can start later, immediately from its beginning, or immediately and partway through the animation.
Syntax: <time>#
Initial value: 0s
Optional OAnimationThe animation-direction CSS property sets whether an animation should play forward, backward, or alternate back and forth between playing the sequence forward and backward.
Syntax: <single-animation-direction>#
Initial value: normal
Optional OAnimationThe animation-duration CSS property sets the length of time that an animation takes to complete one cycle.
Syntax: <time>#
Initial value: 0s
Optional OAnimationThe animation-fill-mode CSS property sets how a CSS animation applies styles to its target before and after its execution.
Syntax: <single-animation-fill-mode>#
Initial value: none
Optional OAnimationThe animation-iteration-count CSS property sets the number of times an animation sequence should be played before stopping.
Syntax: <single-animation-iteration-count>#
Initial value: 1
Optional OAnimationThe animation-name CSS property specifies the names of one or more @keyframes at-rules describing the animation or animations to apply to the element.
Syntax: [ none | <keyframes-name> ]#
Initial value: none
Optional OAnimationThe animation-play-state CSS property sets whether an animation is running or paused.
Syntax: <single-animation-play-state>#
Initial value: running
Optional OAnimationThe animation-timing-function CSS property sets how an animation progresses through the duration of each cycle.
Syntax: <easing-function>#
Initial value: ease
Optional OBackgroundThe background-size CSS property sets the size of the element's background image. The image can be left to its natural size, stretched, or constrained to fit the available space.
Syntax: <bg-size>#
Initial value: auto auto
Optional OBorderThe border-image CSS property draws an image around a given element. It replaces the element's regular border.
Syntax: <'border-image-source'> || <'border-image-slice'> [ / <'border-image-width'> | / <'border-image-width'>? / <'border-image-outset'> ]? || <'border-image-repeat'>
Optional OObjectThe object-fit CSS property sets how the content of a replaced element, such as an <img> or <video>, should be resized to fit its container.
Syntax: fill | contain | cover | none | scale-down
Initial value: fill
Optional OObjectThe object-position CSS property specifies the alignment of the selected replaced element's contents within the element's box. Areas of the box which aren't covered by the replaced element's object will show the element's background.
Syntax: <position>
Initial value: 50% 50%
Optional OTabThe tab-size CSS property is used to customize the width of tab characters (U+0009).
Syntax: <integer> | <length>
Initial value: 8
Optional OTextThe text-overflow CSS property sets how hidden overflow content is signaled to users. It can be clipped, display an ellipsis ('…'), or display a custom string.
Syntax: [ clip | ellipsis | <string> ]{1,2}
Initial value: clip
Optional OTransformThe transform CSS property lets you rotate, scale, skew, or translate an element. It modifies the coordinate space of the CSS visual formatting model.
Syntax: none | <transform-list>
Initial value: none
Optional OTransformThe transform-origin CSS property sets the origin for an element's transformations.
Syntax: [ <length-percentage> | left | center | right | top | bottom ] | [ [ <length-percentage> | left | center | right ] && [ <length-percentage> | top | center | bottom ] ] <length>?
Initial value: 50% 50% 0
Optional OTransitionThe transition CSS property is a shorthand property for transition-property, transition-duration, transition-timing-function, and transition-delay.
Syntax: <single-transition>#
Optional OTransitionThe transition-delay CSS property specifies the duration to wait before starting a property's transition effect when its value changes.
Syntax: <time>#
Initial value: 0s
Optional OTransitionThe transition-duration CSS property sets the length of time a transition animation should take to complete. By default, the value is 0s, meaning that no animation will occur.
Syntax: <time>#
Initial value: 0s
Optional OTransitionThe transition-property CSS property sets the CSS properties to which a transition effect should be applied.
Syntax: none | <single-transition-property>#
Initial value: all
Optional OTransitionThe transition-timing-function CSS property sets how intermediate values are calculated for CSS properties being affected by a transition effect.
Syntax: <easing-function>#
Initial value: ease
Optional WebkitThe CSS align-content property sets the distribution of space between and around content items along a flexbox's cross-axis or a grid's block axis.
Syntax: normal | <baseline-position> | <content-distribution> | <overflow-position>? <content-position>
Initial value: normal
Optional WebkitThe CSS align-items property sets the align-self value on all direct children as a group. In Flexbox, it controls the alignment of items on the Cross Axis. In Grid Layout, it controls the alignment of items on the Block Axis within their grid area.
Syntax: normal | stretch | <baseline-position> | [ <overflow-position>? <self-position> ]
Initial value: normal
Optional WebkitThe align-self CSS property overrides a grid or flex item's align-items value. In Grid, it aligns the item inside the grid area. In Flexbox, it aligns the item on the cross axis.
Syntax: auto | normal | stretch | <baseline-position> | <overflow-position>? <self-position>
Initial value: auto
Optional WebkitThe animation shorthand CSS property applies an animation between styles. It is a shorthand for animation-name, animation-duration, animation-timing-function, animation-delay, animation-iteration-count, animation-direction, animation-fill-mode, and animation-play-state.
Syntax: <single-animation>#
Optional WebkitThe animation-delay CSS property specifies the amount of time to wait from applying the animation to an element before beginning to perform the animation. The animation can start later, immediately from its beginning, or immediately and partway through the animation.
Syntax: <time>#
Initial value: 0s
Optional WebkitThe animation-direction CSS property sets whether an animation should play forward, backward, or alternate back and forth between playing the sequence forward and backward.
Syntax: <single-animation-direction>#
Initial value: normal
Optional WebkitThe animation-duration CSS property sets the length of time that an animation takes to complete one cycle.
Syntax: <time>#
Initial value: 0s
Optional WebkitThe animation-fill-mode CSS property sets how a CSS animation applies styles to its target before and after its execution.
Syntax: <single-animation-fill-mode>#
Initial value: none
Optional WebkitThe animation-iteration-count CSS property sets the number of times an animation sequence should be played before stopping.
Syntax: <single-animation-iteration-count>#
Initial value: 1
Optional WebkitThe animation-name CSS property specifies the names of one or more @keyframes at-rules describing the animation or animations to apply to the element.
Syntax: [ none | <keyframes-name> ]#
Initial value: none
Optional WebkitThe animation-play-state CSS property sets whether an animation is running or paused.
Syntax: <single-animation-play-state>#
Initial value: running
Optional WebkitThe animation-timing-function CSS property sets how an animation progresses through the duration of each cycle.
Syntax: <easing-function>#
Initial value: ease
Optional WebkitThe **appearance** CSS property is used to display an element using platform-native styling, based on the operating system's theme. The -moz-appearance and -webkit-appearance properties are non-standard versions of this property, used (respectively) by Gecko (Firefox) and by WebKit-based (e.g., Safari) and Blink-based (e.g., Chrome, Opera) browsers to achieve the same thing. Note that Firefox and Edge also support -webkit-appearance, for compatibility reasons.
Syntax: none | button | button-bevel | caret | checkbox | default-button | inner-spin-button | listbox | listitem | media-controls-background | media-controls-fullscreen-background | media-current-time-display | media-enter-fullscreen-button | media-exit-fullscreen-button | media-fullscreen-button | media-mute-button | media-overlay-play-button | media-play-button | media-seek-back-button | media-seek-forward-button | media-slider | media-sliderthumb | media-time-remaining-display | media-toggle-closed-captions-button | media-volume-slider | media-volume-slider-container | media-volume-sliderthumb | menulist | menulist-button | menulist-text | menulist-textfield | meter | progress-bar | progress-bar-value | push-button | radio | searchfield | searchfield-cancel-button | searchfield-decoration | searchfield-results-button | searchfield-results-decoration | slider-horizontal | slider-vertical | sliderthumb-horizontal | sliderthumb-vertical | square-button | textarea | textfield | -apple-pay-button
Initial value: none (but this value is overridden in the user agent CSS)
Optional WebkitThe backdrop-filter CSS property lets you apply graphical effects such as blurring or color shifting to the area behind an element. Because it applies to everything behind the element, to see the effect you must make the element or its background at least partially transparent.
Syntax: none | <filter-function-list>
Initial value: none
Optional WebkitThe backface-visibility CSS property sets whether the back face of an element is visible when turned towards the user.
Syntax: visible | hidden
Initial value: visible
Optional WebkitThe background-clip CSS property sets whether an element's background extends underneath its border box, padding box, or content box.
Syntax: <box>#
Initial value: border-box
Optional WebkitThe background-origin CSS property sets the background's origin: from the border start, inside the border, or inside the padding.
Syntax: <box>#
Initial value: padding-box
Optional WebkitThe background-size CSS property sets the size of the element's background image. The image can be left to its natural size, stretched, or constrained to fit the available space.
Syntax: <bg-size>#
Initial value: auto auto
Optional WebkitThe -webkit-border-before CSS property is a shorthand property for setting the individual logical block start border property values in a single place in the style sheet.
Syntax: <'border-width'> || <'border-style'> || <color>
Optional WebkitSyntax: <color>
Initial value: currentcolor
Optional WebkitSyntax: <'border-style'>
Initial value: none
Optional WebkitSyntax: <'border-width'>
Initial value: medium
Optional WebkitThe border-bottom-left-radius CSS property rounds the bottom-left corner of an element by specifying the radius (or the radius of the semi-major and semi-minor axes) of the ellipse defining the curvature of the corner.
Syntax: <length-percentage>{1,2}
Initial value: 0
Optional WebkitThe border-bottom-right-radius CSS property rounds the bottom-right corner of an element by specifying the radius (or the radius of the semi-major and semi-minor axes) of the ellipse defining the curvature of the corner.
Syntax: <length-percentage>{1,2}
Initial value: 0
Optional WebkitThe border-image CSS property draws an image around a given element. It replaces the element's regular border.
Syntax: <'border-image-source'> || <'border-image-slice'> [ / <'border-image-width'> | / <'border-image-width'>? / <'border-image-outset'> ]? || <'border-image-repeat'>
Optional WebkitThe border-image-slice CSS property divides the image specified by border-image-source into regions. These regions form the components of an element's border image.
Syntax: <number-percentage>{1,4} && fill?
Initial value: 100%
Optional WebkitThe border-radius CSS property rounds the corners of an element's outer border edge. You can set a single radius to make circular corners, or two radii to make elliptical corners.
Syntax: <length-percentage>{1,4} [ / <length-percentage>{1,4} ]?
Optional WebkitThe border-top-left-radius CSS property rounds the top-left corner of an element by specifying the radius (or the radius of the semi-major and semi-minor axes) of the ellipse defining the curvature of the corner.
Syntax: <length-percentage>{1,2}
Initial value: 0
Optional WebkitThe border-top-right-radius CSS property rounds the top-right corner of an element by specifying the radius (or the radius of the semi-major and semi-minor axes) of the ellipse defining the curvature of the corner.
Syntax: <length-percentage>{1,2}
Initial value: 0
Optional WebkitThe box-align CSS property specifies how an element aligns its contents across its layout in a perpendicular direction. The effect of the property is only visible if there is extra space in the box.
Syntax: start | center | end | baseline | stretch
Initial value: stretch
Optional WebkitThe box-decoration-break CSS property specifies how an element's fragments should be rendered when broken across multiple lines, columns, or pages.
Syntax: slice | clone
Initial value: slice
Optional WebkitThe box-direction CSS property specifies whether a box lays out its contents normally (from the top or left edge), or in reverse (from the bottom or right edge).
Syntax: normal | reverse | inherit
Initial value: normal
Optional WebkitThe -moz-box-flex and -webkit-box-flex CSS properties specify how a -moz-box or -webkit-box grows to fill the box that contains it, in the direction of the containing box's layout.
Syntax: <number>
Initial value: 0
Optional WebkitThe box-flex-group CSS property assigns the flexbox's child elements to a flex group.
Syntax: <integer>
Initial value: 1
Optional WebkitThe box-lines CSS property determines whether the box may have a single or multiple lines (rows for horizontally oriented boxes, columns for vertically oriented boxes).
Syntax: single | multiple
Initial value: single
Optional WebkitThe box-ordinal-group CSS property assigns the flexbox's child elements to an ordinal group.
Syntax: <integer>
Initial value: 1
Optional WebkitThis is a property of the original CSS Flexible Box Layout Module draft, and has been replaced by a newer standard. See flexbox for information about the current standard.
Syntax: horizontal | vertical | inline-axis | block-axis | inherit
Initial value: inline-axis (horizontal in XUL)
Optional WebkitThe -moz-box-pack and -webkit-box-pack CSS properties specify how a -moz-box or -webkit-box packs its contents in the direction of its layout. The effect of this is only visible if there is extra space in the box.
Syntax: start | center | end | justify
Initial value: start
Optional WebkitThe -webkit-box-reflect CSS property lets you reflect the content of an element in one specific direction.
Syntax: [ above | below | right | left ]? <length>? <image>?
Initial value: none
Optional WebkitThe box-shadow CSS property adds shadow effects around an element's frame. You can set multiple effects separated by commas. A box shadow is described by X and Y offsets relative to the element, blur and spread radius, and color.
Syntax: none | <shadow>#
Initial value: none
Optional WebkitThe box-sizing CSS property sets how the total width and height of an element is calculated.
Syntax: content-box | border-box
Initial value: content-box
Optional WebkitThe **clip-path** CSS property creates a clipping region that sets what part of an element should be shown. Parts that are inside the region are shown, while those outside are hidden.
Syntax: <clip-source> | [ <basic-shape> || <geometry-box> ] | none
Initial value: none
Optional WebkitThe column-count CSS property breaks an element's content into the specified number of columns.
Syntax: <integer> | auto
Initial value: auto
Optional WebkitThe column-fill CSS property controls how an element's contents are balanced when broken into columns.
Syntax: auto | balance | balance-all
Initial value: balance
Optional WebkitThe column-gap CSS property sets the size of the gap (gutter) between an element's columns.
Syntax: normal | <length-percentage>
Initial value: normal
Optional WebkitThe column-rule shorthand CSS property sets the width, style, and color of the line drawn between columns in a multi-column layout.
Syntax: <'column-rule-width'> || <'column-rule-style'> || <'column-rule-color'>
Optional WebkitThe column-rule-color CSS property sets the color of the line drawn between columns in a multi-column layout.
Syntax: <color>
Initial value: currentcolor
Optional WebkitThe column-rule-style CSS property sets the style of the line drawn between columns in a multi-column layout.
Syntax: <'border-style'>
Initial value: none
Optional WebkitThe column-rule-width CSS property sets the width of the line drawn between columns in a multi-column layout.
Syntax: <'border-width'>
Initial value: medium
Optional WebkitThe column-span CSS property makes it possible for an element to span across all columns when its value is set to all.
Syntax: none | all
Initial value: none
Optional WebkitThe column-width CSS property sets the ideal column width in a multi-column layout. The container will have as many columns as can fit without any of them having a width less than the column-width value. If the width of the container is narrower than the specified value, the single column's width will be smaller than the declared column width.
Syntax: <length> | auto
Initial value: auto
Optional WebkitThe columns CSS shorthand property sets the number of columns to use when drawing an element's contents, as well as those columns' widths.
Syntax: <'column-width'> || <'column-count'>
Optional WebkitThe filter CSS property applies graphical effects like blur or color shift to an element. Filters are commonly used to adjust the rendering of images, backgrounds, and borders.
Syntax: none | <filter-function-list>
Initial value: none
Optional WebkitThe flex CSS shorthand property sets how a flex item will grow or shrink to fit the space available in its flex container.
Syntax: none | [ <'flex-grow'> <'flex-shrink'>? || <'flex-basis'> ]
Optional WebkitThe flex-basis CSS property sets the initial main size of a flex item. It sets the size of the content box unless otherwise set with box-sizing.
Syntax: content | <'width'>
Initial value: auto
Optional WebkitThe flex-direction CSS property sets how flex items are placed in the flex container defining the main axis and the direction (normal or reversed).
Syntax: row | row-reverse | column | column-reverse
Initial value: row
Optional WebkitThe flex-flow CSS shorthand property specifies the direction of a flex container, as well as its wrapping behavior.
Syntax: <'flex-direction'> || <'flex-wrap'>
Optional WebkitThe flex-grow CSSÂ property sets the flex grow factor of a flex item main size.
Syntax: <number>
Initial value: 0
Optional WebkitThe flex-shrink CSS property sets the flex shrink factor of a flex item. If the size of all flex items is larger than the flex container, items shrink to fit according to flex-shrink.
Syntax: <number>
Initial value: 1
Optional WebkitThe flex-wrap CSS property sets whether flex items are forced onto one line or can wrap onto multiple lines. If wrapping is allowed, it sets the direction that lines are stacked.
Syntax: nowrap | wrap | wrap-reverse
Initial value: nowrap
Optional WebkitThe font-feature-settings CSS property controls advanced typographic features in OpenType fonts.
Syntax: normal | <feature-tag-value>#
Initial value: normal
Optional WebkitThe font-kerning CSS property sets the use of the kerning information stored in a font.
Syntax: auto | normal | none
Initial value: auto
Optional WebkitThe font-smooth CSS property controls the application of anti-aliasing when fonts are rendered.
Syntax: auto | never | always | <absolute-size> | <length>
Initial value: auto
Optional WebkitThe font-variant-ligatures CSS property controls which ligatures and contextual forms are used in textual content of the elements it applies to. This leads to more harmonized forms in the resulting text.
Syntax: normal | none | [ <common-lig-values> || <discretionary-lig-values> || <historical-lig-values> || <contextual-alt-values> ]
Initial value: normal
Optional WebkitThe hyphens CSS property specifies how words should be hyphenated when text wraps across multiple lines. It can prevent hyphenation entirely, hyphenate at manually-specified points within the text, or let the browser automatically insert hyphens where appropriate.
Syntax: none | manual | auto
Initial value: manual
Optional WebkitThe initial-letter CSS property sets styling for dropped, raised, and sunken initial letters.
Syntax: normal | [ <number> <integer>? ]
Initial value: normal
Optional WebkitThe CSS justify-content property defines how the browser distributes space between and around content items along the main-axis of a flex container, and the inline axis of a grid container.
Syntax: normal | <content-distribution> | <overflow-position>? [ <content-position> | left | right ]
Initial value: normal
Optional WebkitThe line-break CSS property sets how to break lines of Chinese, Japanese, or Korean (CJK) text when working with punctuation and symbols.
Syntax: auto | loose | normal | strict | anywhere
Initial value: auto
Optional WebkitThe -webkit-line-clamp CSS property allows limiting of the contents of a block container to the specified number of lines.
Syntax: none | <integer>
Initial value: none
Optional WebkitThe margin-inline-end CSS property defines the logical inline end margin of an element, which maps to a physical margin depending on the element's writing mode, directionality, and text orientation. In other words, it corresponds to the margin-top, margin-right, margin-bottom or margin-left property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'margin-left'>
Initial value: 0
Optional WebkitThe margin-inline-start CSS property defines the logical inline start margin of an element, which maps to a physical margin depending on the element's writing mode, directionality, and text orientation. It corresponds to the margin-top, margin-right, margin-bottom, or margin-left property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'margin-left'>
Initial value: 0
Optional WebkitThe mask CSS shorthand property hides an element (partially or fully) by masking or clipping the image at specific points.
Syntax: [ <mask-reference> || <position> [ / <bg-size> ]? || <repeat-style> || [ <box> | border | padding | content | text ] || [ <box> | border | padding | content ] ]#
Optional WebkitIf a -webkit-mask-image is specified, -webkit-mask-attachment determines whether the mask image's position is fixed within the viewport, or scrolls along with its containing block.
Syntax: <attachment>#
Initial value: scroll
Optional WebkitThe mask-border CSS shorthand property lets you create a mask along the edge of an element's border.
Syntax: <'mask-border-source'> || <'mask-border-slice'> [ / <'mask-border-width'>? [ / <'mask-border-outset'> ]? ]? || <'mask-border-repeat'> || <'mask-border-mode'>
Optional WebkitThe mask-border-outset CSS property specifies the distance by which an element's mask border is set out from its border box.
Syntax: [ <length> | <number> ]{1,4}
Initial value: 0
Optional WebkitThe mask-border-repeat CSS property sets how the edge regions of a source image are adjusted to fit the dimensions of an element's mask border.
Syntax: [ stretch | repeat | round | space ]{1,2}
Initial value: stretch
Optional WebkitThe mask-border-slice CSS property divides the image set by mask-border-source into regions. These regions are used to form the components of an element's mask border.
Syntax: <number-percentage>{1,4} fill?
Initial value: 0
Optional WebkitThe mask-border-source CSS property sets the source image used to create an element's mask border.
Syntax: none | <image>
Initial value: none
Optional WebkitThe mask-border-width CSS property sets the width of an element's mask border.
Syntax: [ <length-percentage> | <number> | auto ]{1,4}
Initial value: auto
Optional WebkitThe mask-clip CSS property determines the area which is affected by a mask. The painted content of an element must be restricted to this area.
Syntax: [ <box> | border | padding | content | text ]#
Initial value: border
Optional WebkitThe -webkit-mask-composite property specifies the manner in which multiple mask images applied to the same element are composited with one another. Mask images are composited in the opposite order that they are declared with the -webkit-mask-image property.
Syntax: <composite-style>#
Initial value: source-over
Optional WebkitThe mask-image CSS property sets the image that is used as mask layer for an element.
Syntax: <mask-reference>#
Initial value: none
Optional WebkitThe mask-origin CSS property sets the origin of a mask.
Syntax: [ <box> | border | padding | content ]#
Initial value: padding
Optional WebkitThe mask-position CSS property sets the initial position, relative to the mask position layer set by mask-origin, for each defined mask image.
Syntax: <position>#
Initial value: 0% 0%
Optional WebkitThe -webkit-mask-position-x CSS property sets the initial horizontal position of a mask image.
Syntax: [ <length-percentage> | left | center | right ]#
Initial value: 0%
Optional WebkitThe -webkit-mask-position-y CSS property sets the initial vertical position of a mask image.
Syntax: [ <length-percentage> | top | center | bottom ]#
Initial value: 0%
Optional WebkitThe mask-repeat CSS property sets how mask images are repeated. A mask image can be repeated along the horizontal axis, the vertical axis, both axes, or not repeated at all.
Syntax: <repeat-style>#
Initial value: repeat
Optional WebkitThe -webkit-mask-repeat-x property specifies whether and how a mask image is repeated (tiled) horizontally.
Syntax: repeat | no-repeat | space | round
Initial value: repeat
Optional WebkitThe -webkit-mask-repeat-y property sets whether and how a mask image is repeated (tiled) vertically.
Syntax: repeat | no-repeat | space | round
Initial value: repeat
Optional WebkitThe mask-size CSS property specifies the sizes of the mask images. The size of the image can be fully or partially constrained in order to preserve its intrinsic ratio.
Syntax: <bg-size>#
Initial value: auto auto
Optional WebkitThe max-inline-size CSS property defines the horizontal or vertical maximum size of an element's block, depending on its writing mode. It corresponds to either the max-width or the max-height property, depending on the value of writing-mode.
Syntax: <'max-width'>
Initial value: 0
Optional WebkitThe order CSS property sets the order to lay out an item in a flex or grid container. Items in a container are sorted by ascending order value and then by their source code order.
Syntax: <integer>
Initial value: 0
Optional WebkitThe -webkit-overflow-scrolling CSS property controls whether or not touch devices use momentum-based scrolling for a given element.
Syntax: auto | touch
Initial value: auto
Optional WebkitThe padding-inline-end CSS property defines the logical inline end padding of an element, which maps to a physical padding depending on the element's writing mode, directionality, and text orientation.
Syntax: <'padding-left'>
Initial value: 0
Optional WebkitThe padding-inline-start CSS property defines the logical inline start padding of an element, which maps to a physical padding depending on the element's writing mode, directionality, and text orientation.
Syntax: <'padding-left'>
Initial value: 0
Optional WebkitThe perspective CSS property determines the distance between the z=0 plane and the user in order to give a 3D-positioned element some perspective.
Syntax: none | <length>
Initial value: none
Optional WebkitThe perspective-origin CSS property determines the position at which the viewer is looking. It is used as the vanishing point by the perspective property.
Syntax: <position>
Initial value: 50% 50%
Optional WebkitThe color-adjust CSS property sets what, if anything, the user agent may do to optimize the appearance of the element on the output device. By default, the browser is allowed to make any adjustments to the element's appearance it determines to be necessary and prudent given the type and capabilities of the output device.
Syntax: economy | exact
Initial value: economy
Optional WebkitThe **ruby-position** CSS property defines the position of a ruby element relatives to its base element. It can be position over the element (over), under it (under), or between the characters, on their right side (inter-character).
Syntax: [ alternate || [ over | under ] ] | inter-character
Initial value: alternate
Optional WebkitThe scroll-snap-points-x CSS property defines the horizontal positioning of snap points within the content of the scroll container they are applied to.
Syntax: none | repeat( <length-percentage> )
Initial value: none
Optional WebkitThe scroll-snap-points-y CSS property defines the vertical positioning of snap points within the content of the scroll container they are applied to.
Syntax: none | repeat( <length-percentage> )
Initial value: none
Optional WebkitThe scroll-snap-type CSS property sets how strictly snap points are enforced on the scroll container in case there is one.
Syntax: none | [ x | y | block | inline | both ] [ mandatory | proximity ]?
Initial value: none
Optional WebkitThe shape-margin CSS property sets a margin for a CSS shape created using shape-outside.
Syntax: <length-percentage>
Initial value: 0
Optional Webkit-webkit-tap-highlight-color is a non-standard CSS property that sets the color of the highlight that appears over a link while it's being tapped. The highlighting indicates to the user that their tap is being successfully recognized, and indicates which element they're tapping on.
Syntax: <color>
Initial value: black
Optional WebkitThe text-combine-upright CSS property sets the combination of characters into the space of a single character. If the combined text is wider than 1em, the user agent must fit the contents within 1em. The resulting composition is treated as a single upright glyph for layout and decoration. This property only has an effect in vertical writing modes.
Syntax: none | all | [ digits <integer>? ]
Initial value: none
Optional WebkitThe text-decoration-color CSS property sets the color of decorations added to text by text-decoration-line.
Syntax: <color>
Initial value: currentcolor
Optional WebkitThe text-decoration-line CSS property sets the kind of decoration that is used on text in an element, such as an underline or overline.
Syntax: none | [ underline || overline || line-through || blink ] | spelling-error | grammar-error
Initial value: none
Optional WebkitThe text-decoration-skip CSS property sets what parts of an element’s content any text decoration affecting the element must skip over. It controls all text decoration lines drawn by the element and also any text decoration lines drawn by its ancestors.
Syntax: none | [ objects || [ spaces | [ leading-spaces || trailing-spaces ] ] || edges || box-decoration ]
Initial value: objects
Optional WebkitThe text-decoration-style CSS property sets the style of the lines specified by text-decoration-line. The style applies to all lines that are set with text-decoration-line.
Syntax: solid | double | dotted | dashed | wavy
Initial value: solid
Optional WebkitThe text-emphasis CSS property applies emphasis marks to text (except spaces and control characters). It is a shorthand for text-emphasis-style and text-emphasis-color.
Syntax: <'text-emphasis-style'> || <'text-emphasis-color'>
Optional WebkitThe text-emphasis-color CSS property sets the color of emphasis marks. This value can also be set using the text-emphasis shorthand.
Syntax: <color>
Initial value: currentcolor
Optional WebkitThe text-emphasis-position CSS property sets where emphasis marks are drawn. Like ruby text, if there isn't enough room for emphasis marks, the line height is increased.
Syntax: [ over | under ] && [ right | left ]
Initial value: over right
Optional WebkitThe text-emphasis-style CSS property sets the appearance of emphasis marks. It can also be set, and reset, using the text-emphasis shorthand.
Syntax: none | [ [ filled | open ] || [ dot | circle | double-circle | triangle | sesame ] ] | <string>
Initial value: none
Optional WebkitThe -webkit-text-fill-color CSS property specifies the fill color of characters of text. If this property is not set, the value of the color property is used.
Syntax: <color>
Initial value: currentcolor
Optional WebkitThe text-orientation CSS property sets the orientation of the text characters in a line. It only affects text in vertical mode (when writing-mode is not horizontal-tb). It is useful for controlling the display of languages that use vertical script, and also for making vertical table headers.
Syntax: mixed | upright | sideways
Initial value: mixed
Optional WebkitThe text-size-adjust CSS property controls the text inflation algorithm used on some smartphones and tablets. Other browsers will ignore this property.
Syntax: none | auto | <percentage>
Initial value: auto for smartphone browsers supporting inflation, none in other cases (and then not modifiable).
Optional WebkitThe -webkit-text-stroke CSS property specifies the width and color of strokes for text characters. This is a shorthand property for the longhand properties -webkit-text-stroke-width and -webkit-text-stroke-color.
Syntax: <length> || <color>
Optional WebkitThe -webkit-text-stroke-color CSS property specifies the stroke color of characters of text. If this property is not set, the value of the color property is used.
Syntax: <color>
Initial value: currentcolor
Optional WebkitThe -webkit-text-stroke-width CSS property specifies the width of the stroke for text.
Syntax: <length>
Initial value: 0
Optional WebkitThe text-underline-position CSS property specifies the position of the underline which is set using the text-decoration property's underline value.
Syntax: auto | from-font | [ under || [ left | right ] ]
Initial value: auto
Optional WebkitThe -webkit-touch-callout CSS property controls the display of the default callout shown when you touch and hold a touch target.
Syntax: default | none
Initial value: default
Optional WebkitThe transform CSS property lets you rotate, scale, skew, or translate an element. It modifies the coordinate space of the CSS visual formatting model.
Syntax: none | <transform-list>
Initial value: none
Optional WebkitThe transform-origin CSS property sets the origin for an element's transformations.
Syntax: [ <length-percentage> | left | center | right | top | bottom ] | [ [ <length-percentage> | left | center | right ] && [ <length-percentage> | top | center | bottom ] ] <length>?
Initial value: 50% 50% 0
Optional WebkitThe transform-style CSS property sets whether children of an element are positioned in the 3D space or are flattened in the plane of the element.
Syntax: flat | preserve-3d
Initial value: flat
Optional WebkitThe transition CSS property is a shorthand property for transition-property, transition-duration, transition-timing-function, and transition-delay.
Syntax: <single-transition>#
Optional WebkitThe transition-delay CSS property specifies the duration to wait before starting a property's transition effect when its value changes.
Syntax: <time>#
Initial value: 0s
Optional WebkitThe transition-duration CSS property sets the length of time a transition animation should take to complete. By default, the value is 0s, meaning that no animation will occur.
Syntax: <time>#
Initial value: 0s
Optional WebkitThe transition-property CSS property sets the CSS properties to which a transition effect should be applied.
Syntax: none | <single-transition-property>#
Initial value: all
Optional WebkitThe transition-timing-function CSS property sets how intermediate values are calculated for CSS properties being affected by a transition effect.
Syntax: <easing-function>#
Initial value: ease
Optional WebkitSyntax: read-only | read-write | read-write-plaintext-only
Initial value: read-only
Optional WebkitThe **user-select** CSS property controls whether the user can select text. This doesn't have any effect on content loaded as chrome, except in textboxes.
Syntax: auto | text | none | contain | all
Initial value: auto
Optional WebkitThe writing-mode CSS property sets whether lines of text are laid out horizontally or vertically, as well as the direction in which blocks progress. When set for an entire document, it should be set on the root element (html element for HTML documents).
Syntax: horizontal-tb | vertical-rl | vertical-lr | sideways-rl | sideways-lr
Initial value: horizontal-tb
Optional accentThe accent-color CSS property sets the color of the elements accent. An accent appears in elements such as <input> of type="checkbox", or type="radio".
Syntax: auto | <color>
Initial value: auto
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 93 | 92 | No | 93 | No |
Optional alignThe CSS align-content property sets the distribution of space between and around content items along a flexbox's cross-axis or a grid's block axis.
Syntax: normal | <baseline-position> | <content-distribution> | <overflow-position>? <content-position>
Initial value: normal
Supported in Flex Layout
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 29 | 28 | 9 | 12 | 11 |
| 21 -x- | 7 -x- |
Supported in Grid Layout
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 57 | 52 | 10.1 | 16 | No |
Optional alignThe CSS align-items property sets the align-self value on all direct children as a group. In Flexbox, it controls the alignment of items on the Cross Axis. In Grid Layout, it controls the alignment of items on the Block Axis within their grid area.
Syntax: normal | stretch | <baseline-position> | [ <overflow-position>? <self-position> ]
Initial value: normal
Supported in Flex Layout
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 52 | 20 | 9 | 12 | 11 |
| 21 -x- | 7 -x- |
Supported in Grid Layout
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 57 | 52 | 10.1 | 16 | No |
Optional alignThe align-self CSS property overrides a grid or flex item's align-items value. In Grid, it aligns the item inside the grid area. In Flexbox, it aligns the item on the cross axis.
Syntax: auto | normal | stretch | <baseline-position> | <overflow-position>? <self-position>
Initial value: auto
Supported in Flex Layout
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 36 | 20 | 9 | 12 | 11 |
| 21 -x- | 6.1 -x- |
Supported in Grid Layout
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 57 | 52 | 10.1 | 16 | 10 -x- |
Optional alignThe align-tracks CSS property sets the alignment in the masonry axis for grid containers that have masonry in their block axis.
Syntax: [ normal | <baseline-position> | <content-distribution> | <overflow-position>? <content-position> ]#
Initial value: normal
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| No | n/a | No | No | No |
Optional alignmentOptional allThe **all** shorthand CSS property resets all of an element's properties except unicode-bidi, direction, and CSS Custom Properties. It can set properties to their initial or inherited values, or to the values specified in another stylesheet origin.
Syntax: initial | inherit | unset | revert
Initial value: There is no practical initial value for it.
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 37 | 27 | 9.1 | 79 | No |
Optional animationThe animation shorthand CSS property applies an animation between styles. It is a shorthand for animation-name, animation-duration, animation-timing-function, animation-delay, animation-iteration-count, animation-direction, animation-fill-mode, and animation-play-state.
Syntax: <single-animation>#
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 43 | 16 | 9 | 12 | 10 |
| 3 -x- | 5 -x- | 4 -x- |
Optional animationThe animation-delay CSS property specifies the amount of time to wait from applying the animation to an element before beginning to perform the animation. The animation can start later, immediately from its beginning, or immediately and partway through the animation.
Syntax: <time>#
Initial value: 0s
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 43 | 16 | 9 | 12 | 10 |
| 3 -x- | 5 -x- | 4 -x- |
Optional animationThe animation-direction CSS property sets whether an animation should play forward, backward, or alternate back and forth between playing the sequence forward and backward.
Syntax: <single-animation-direction>#
Initial value: normal
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 43 | 16 | 9 | 12 | 10 |
| 3 -x- | 5 -x- | 4 -x- |
https://developer.mozilla.org/docs/Web/CSS/animation-direction
Optional animationThe animation-duration CSS property sets the length of time that an animation takes to complete one cycle.
Syntax: <time>#
Initial value: 0s
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 43 | 16 | 9 | 12 | 10 |
| 3 -x- | 5 -x- | 4 -x- |
https://developer.mozilla.org/docs/Web/CSS/animation-duration
Optional animationThe animation-fill-mode CSS property sets how a CSS animation applies styles to its target before and after its execution.
Syntax: <single-animation-fill-mode>#
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 43 | 16 | 9 | 12 | 10 |
| 3 -x- | 5 -x- | 5 -x- |
https://developer.mozilla.org/docs/Web/CSS/animation-fill-mode
Optional animationThe animation-iteration-count CSS property sets the number of times an animation sequence should be played before stopping.
Syntax: <single-animation-iteration-count>#
Initial value: 1
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 43 | 16 | 9 | 12 | 10 |
| 3 -x- | 5 -x- | 4 -x- |
https://developer.mozilla.org/docs/Web/CSS/animation-iteration-count
Optional animationThe animation-name CSS property specifies the names of one or more @keyframes at-rules describing the animation or animations to apply to the element.
Syntax: [ none | <keyframes-name> ]#
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 43 | 16 | 9 | 12 | 10 |
| 3 -x- | 5 -x- | 4 -x- |
Optional animationThe animation-play-state CSS property sets whether an animation is running or paused.
Syntax: <single-animation-play-state>#
Initial value: running
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 43 | 16 | 9 | 12 | 10 |
| 3 -x- | 5 -x- | 4 -x- |
https://developer.mozilla.org/docs/Web/CSS/animation-play-state
Optional animationThe animation-timing-function CSS property sets how an animation progresses through the duration of each cycle.
Syntax: <easing-function>#
Initial value: ease
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 43 | 16 | 9 | 12 | 10 |
| 3 -x- | 5 -x- | 4 -x- |
https://developer.mozilla.org/docs/Web/CSS/animation-timing-function
Optional appearanceThe **appearance** CSS property is used to display an element using platform-native styling, based on the operating system's theme. The -moz-appearance and -webkit-appearance properties are non-standard versions of this property, used (respectively) by Gecko (Firefox) and by WebKit-based (e.g., Safari) and Blink-based (e.g., Chrome, Opera) browsers to achieve the same thing. Note that Firefox and Edge also support -webkit-appearance, for compatibility reasons.
Syntax: none | auto | textfield | menulist-button | <compat-auto>
Initial value: auto
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 84 | 80 | 3 -x- | 84 | No |
| 1 -x- | 1 -x- | 12 -x- |
Optional aspectThe aspect-ratio  CSS property sets a preferred aspect ratio for the box, which will be used in the calculation of auto sizes and some other layout functions.
Syntax: auto | <ratio>
Initial value: auto
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 88 | 89 | 15 | 88 | No |
Optional azimuthIn combination with elevation, the azimuth CSS property enables different audio sources to be positioned spatially for aural presentation. This is important in that it provides a natural way to tell several voices apart, as each can be positioned to originate at a different location on the sound stage. Stereo output produce a lateral sound stage, while binaural headphones and multi-speaker setups allow for a fully three-dimensional stage.
Syntax: <angle> | [ [ left-side | far-left | left | center-left | center | center-right | right | far-right | right-side ] || behind ] | leftwards | rightwards
Initial value: center
Optional backdropThe backdrop-filter CSS property lets you apply graphical effects such as blurring or color shifting to the area behind an element. Because it applies to everything behind the element, to see the effect you must make the element or its background at least partially transparent.
Syntax: none | <filter-function-list>
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 76 | n/a | 9 -x- | 17 | No |
Optional backfaceThe backface-visibility CSS property sets whether the back face of an element is visible when turned towards the user.
Syntax: visible | hidden
Initial value: visible
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 36 | 16 | 5.1 -x- | 12 | 10 |
| 12 -x- | 10 -x- |
https://developer.mozilla.org/docs/Web/CSS/backface-visibility
Optional backgroundThe background shorthand CSS property sets all background style properties at once, such as color, image, origin and size, or repeat method.
Syntax: [ <bg-layer> , ]* <final-bg-layer>
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
Optional backgroundThe background-attachment CSS property sets whether a background image's position is fixed within the viewport, or scrolls with its containing block.
Syntax: <attachment>#
Initial value: scroll
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
https://developer.mozilla.org/docs/Web/CSS/background-attachment
Optional backgroundThe background-blend-mode CSS property sets how an element's background images should blend with each other and with the element's background color.
Syntax: <blend-mode>#
Initial value: normal
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 35 | 30 | 8 | 79 | No |
https://developer.mozilla.org/docs/Web/CSS/background-blend-mode
Optional backgroundThe background-clip CSS property sets whether an element's background extends underneath its border box, padding box, or content box.
Syntax: <box>#
Initial value: border-box
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 4 | 3 -x- | 12 | 9 |
Optional backgroundThe background-color CSS property sets the background color of an element.
Syntax: <color>
Initial value: transparent
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
Optional backgroundThe background-image CSS property sets one or more background images on an element.
Syntax: <bg-image>#
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
Optional backgroundThe background-origin CSS property sets the background's origin: from the border start, inside the border, or inside the padding.
Syntax: <box>#
Initial value: padding-box
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 4 | 3 | 12 | 9 |
https://developer.mozilla.org/docs/Web/CSS/background-origin
Optional backgroundThe background-position CSS property sets the initial position for each background image. The position is relative to the position layer set by background-origin.
Syntax: <bg-position>#
Initial value: 0% 0%
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
https://developer.mozilla.org/docs/Web/CSS/background-position
Optional backgroundThe background-position-x CSS property sets the initial horizontal position for each background image. The position is relative to the position layer set by background-origin.
Syntax: [ center | [ [ left | right | x-start | x-end ]? <length-percentage>? ]! ]#
Initial value: left
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 49 | 1 | 12 | 6 |
https://developer.mozilla.org/docs/Web/CSS/background-position-x
Optional backgroundThe background-position-y CSS property sets the initial vertical position for each background image. The position is relative to the position layer set by background-origin.
Syntax: [ center | [ [ top | bottom | y-start | y-end ]? <length-percentage>? ]! ]#
Initial value: top
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 49 | 1 | 12 | 6 |
https://developer.mozilla.org/docs/Web/CSS/background-position-y
Optional backgroundThe background-repeat CSS property sets how background images are repeated. A background image can be repeated along the horizontal and vertical axes, or not repeated at all.
Syntax: <repeat-style>#
Initial value: repeat
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
https://developer.mozilla.org/docs/Web/CSS/background-repeat
Optional backgroundThe background-size CSS property sets the size of the element's background image. The image can be left to its natural size, stretched, or constrained to fit the available space.
Syntax: <bg-size>#
Initial value: auto auto
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 3 | 4 | 5 | 12 | 9 |
| 1 -x- | 3 -x- |
Optional baselineOptional blockSyntax: clip | ellipsis | <string>
Initial value: clip
Optional blockThe block-size CSS property defines the horizontal or vertical size of an element's block, depending on its writing mode. It corresponds to either the width or the height property, depending on the value of writing-mode.
Syntax: <'width'>
Initial value: auto
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 57 | 41 | 12.1 | 79 | No |
Optional borderThe border shorthand CSS property sets an element's border. It sets the values of border-width, border-style, and border-color.
Syntax: <line-width> || <line-style> || <color>
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
Optional borderThe border-block CSS property is a shorthand property for setting the individual logical block border property values in a single place in the style sheet.
Syntax: <'border-top-width'> || <'border-top-style'> || <color>
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 87 | 66 | 14.1 | 87 | No |
Optional borderThe border-block-color CSS property defines the color of the logical block borders of an element, which maps to a physical border color depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-color and border-bottom-color, or border-right-color and border-left-color property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-color'>{1,2}
Initial value: currentcolor
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 87 | 66 | 14.1 | 87 | No |
https://developer.mozilla.org/docs/Web/CSS/border-block-color
Optional borderThe border-block-end CSS property is a shorthand property for setting the individual logical block-end border property values in a single place in the style sheet.
Syntax: <'border-top-width'> || <'border-top-style'> || <color>
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 69 | 41 | 12.1 | 79 | No |
Optional borderThe border-block-end-color CSS property defines the color of the logical block-end border of an element, which maps to a physical border color depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-color, border-right-color, border-bottom-color, or border-left-color property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-color'>
Initial value: currentcolor
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 69 | 41 | 12.1 | 79 | No |
https://developer.mozilla.org/docs/Web/CSS/border-block-end-color
Optional borderThe border-block-end-style CSS property defines the style of the logical block-end border of an element, which maps to a physical border style depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-style, border-right-style, border-bottom-style, or border-left-style property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-style'>
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 69 | 41 | 12.1 | 79 | No |
https://developer.mozilla.org/docs/Web/CSS/border-block-end-style
Optional borderThe border-block-end-width CSS property defines the width of the logical block-end border of an element, which maps to a physical border width depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-width, border-right-width, border-bottom-width, or border-left-width property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-width'>
Initial value: medium
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 69 | 41 | 12.1 | 79 | No |
https://developer.mozilla.org/docs/Web/CSS/border-block-end-width
Optional borderThe border-block-start CSS property is a shorthand property for setting the individual logical block-start border property values in a single place in the style sheet.
Syntax: <'border-top-width'> || <'border-top-style'> || <color>
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 69 | 41 | 12.1 | 79 | No |
https://developer.mozilla.org/docs/Web/CSS/border-block-start
Optional borderThe border-block-start-color CSS property defines the color of the logical block-start border of an element, which maps to a physical border color depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-color, border-right-color, border-bottom-color, or border-left-color property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-color'>
Initial value: currentcolor
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 69 | 41 | 12.1 | 79 | No |
https://developer.mozilla.org/docs/Web/CSS/border-block-start-color
Optional borderThe border-block-start-style CSS property defines the style of the logical block start border of an element, which maps to a physical border style depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-style, border-right-style, border-bottom-style, or border-left-style property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-style'>
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 69 | 41 | 12.1 | 79 | No |
https://developer.mozilla.org/docs/Web/CSS/border-block-start-style
Optional borderThe border-block-start-width CSS property defines the width of the logical block-start border of an element, which maps to a physical border width depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-width, border-right-width, border-bottom-width, or border-left-width property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-width'>
Initial value: medium
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 69 | 41 | 12.1 | 79 | No |
https://developer.mozilla.org/docs/Web/CSS/border-block-start-width
Optional borderThe border-block-style CSS property defines the style of the logical block borders of an element, which maps to a physical border style depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-style and border-bottom-style, or border-left-style and border-right-style properties depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-style'>
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 87 | 66 | 14.1 | 87 | No |
https://developer.mozilla.org/docs/Web/CSS/border-block-style
Optional borderThe border-block-width CSS property defines the width of the logical block borders of an element, which maps to a physical border width depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-width and border-bottom-width, or border-left-width, and border-right-width property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-width'>
Initial value: medium
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 87 | 66 | 14.1 | 87 | No |
https://developer.mozilla.org/docs/Web/CSS/border-block-width
Optional borderThe border-bottom shorthand CSS property sets an element's bottom border. It sets the values of border-bottom-width, border-bottom-style and border-bottom-color.
Syntax: <line-width> || <line-style> || <color>
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
Optional borderThe border-bottom-color CSS property sets the color of an element's bottom border. It can also be set with the shorthand CSS properties border-color or border-bottom.
Syntax: <'border-top-color'>
Initial value: currentcolor
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
https://developer.mozilla.org/docs/Web/CSS/border-bottom-color
Optional borderThe border-bottom-left-radius CSS property rounds the bottom-left corner of an element by specifying the radius (or the radius of the semi-major and semi-minor axes) of the ellipse defining the curvature of the corner.
Syntax: <length-percentage>{1,2}
Initial value: 0
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 4 | 4 | 5 | 12 | 9 |
| 1 -x- | 3 -x- |
https://developer.mozilla.org/docs/Web/CSS/border-bottom-left-radius
Optional borderThe border-bottom-right-radius CSS property rounds the bottom-right corner of an element by specifying the radius (or the radius of the semi-major and semi-minor axes) of the ellipse defining the curvature of the corner.
Syntax: <length-percentage>{1,2}
Initial value: 0
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 4 | 4 | 5 | 12 | 9 |
| 1 -x- | 3 -x- |
https://developer.mozilla.org/docs/Web/CSS/border-bottom-right-radius
Optional borderThe border-bottom-style CSS property sets the line style of an element's bottom border.
Syntax: <line-style>
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 5.5 |
https://developer.mozilla.org/docs/Web/CSS/border-bottom-style
Optional borderThe border-bottom-width CSS property sets the width of the bottom border of an element.
Syntax: <line-width>
Initial value: medium
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
https://developer.mozilla.org/docs/Web/CSS/border-bottom-width
Optional borderThe border-collapse CSS property sets whether cells inside a <table> have shared or separate borders.
Syntax: collapse | separate
Initial value: separate
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1.2 | 12 | 5 |
Optional borderThe border-color shorthand CSS property sets the color of an element's border.
Syntax: <color>{1,4}
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
Optional borderThe border-end-end-radius CSS property defines a logical border radius on an element, which maps to a physical border radius that depends on the element's writing-mode, direction, and text-orientation. This is useful when building styles to work regardless of the text orientation and writing mode.
Syntax: <length-percentage>{1,2}
Initial value: 0
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 89 | 66 | 15 | 89 | No |
https://developer.mozilla.org/docs/Web/CSS/border-end-end-radius
Optional borderThe border-end-start-radius CSS property defines a logical border radius on an element, which maps to a physical border radius depending on the element's writing-mode, direction, and text-orientation. This is useful when building styles to work regardless of the text orientation and writing mode.
Syntax: <length-percentage>{1,2}
Initial value: 0
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 89 | 66 | 15 | 89 | No |
https://developer.mozilla.org/docs/Web/CSS/border-end-start-radius
Optional borderThe border-image CSS property draws an image around a given element. It replaces the element's regular border.
Syntax: <'border-image-source'> || <'border-image-slice'> [ / <'border-image-width'> | / <'border-image-width'>? / <'border-image-outset'> ]? || <'border-image-repeat'>
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 16 | 15 | 6 | 12 | 11 |
| 7 -x- | 3.5 -x- | 3 -x- |
Optional borderThe border-image-outset CSS property sets the distance by which an element's border image is set out from its border box.
Syntax: [ <length> | <number> ]{1,4}
Initial value: 0
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 15 | 15 | 6 | 12 | 11 |
https://developer.mozilla.org/docs/Web/CSS/border-image-outset
Optional borderThe border-image-repeat CSS property defines how the edge regions of a source image are adjusted to fit the dimensions of an element's border image.
Syntax: [ stretch | repeat | round | space ]{1,2}
Initial value: stretch
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 15 | 15 | 6 | 12 | 11 |
https://developer.mozilla.org/docs/Web/CSS/border-image-repeat
Optional borderThe border-image-slice CSS property divides the image specified by border-image-source into regions. These regions form the components of an element's border image.
Syntax: <number-percentage>{1,4} && fill?
Initial value: 100%
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 15 | 15 | 6 | 12 | 11 |
https://developer.mozilla.org/docs/Web/CSS/border-image-slice
Optional borderThe border-image-source CSS property sets the source image used to create an element's border image.
Syntax: none | <image>
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 15 | 15 | 6 | 12 | 11 |
https://developer.mozilla.org/docs/Web/CSS/border-image-source
Optional borderThe border-image-width CSS property sets the width of an element's border image.
Syntax: [ <length-percentage> | <number> | auto ]{1,4}
Initial value: 1
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 15 | 13 | 6 | 12 | 11 |
https://developer.mozilla.org/docs/Web/CSS/border-image-width
Optional borderThe border-inline CSS property is a shorthand property for setting the individual logical inline border property values in a single place in the style sheet.
Syntax: <'border-top-width'> || <'border-top-style'> || <color>
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 87 | 66 | 14.1 | 87 | No |
Optional borderThe border-inline-color CSS property defines the color of the logical inline borders of an element, which maps to a physical border color depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-color and border-bottom-color, or border-right-color and border-left-color property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-color'>{1,2}
Initial value: currentcolor
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 87 | 66 | 14.1 | 87 | No |
https://developer.mozilla.org/docs/Web/CSS/border-inline-color
Optional borderThe border-inline-end CSS property is a shorthand property for setting the individual logical inline-end border property values in a single place in the style sheet.
Syntax: <'border-top-width'> || <'border-top-style'> || <color>
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 69 | 41 | 12.1 | 79 | No |
https://developer.mozilla.org/docs/Web/CSS/border-inline-end
Optional borderThe border-inline-end-color CSS property defines the color of the logical inline-end border of an element, which maps to a physical border color depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-color, border-right-color, border-bottom-color, or border-left-color property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-color'>
Initial value: currentcolor
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 69 | 41 | 12.1 | 79 | No |
| 3 (-moz-border-end-color) |
https://developer.mozilla.org/docs/Web/CSS/border-inline-end-color
Optional borderThe border-inline-end-style CSS property defines the style of the logical inline end border of an element, which maps to a physical border style depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-style, border-right-style, border-bottom-style, or border-left-style property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-style'>
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 69 | 41 | 12.1 | 79 | No |
| 3 (-moz-border-end-style) |
https://developer.mozilla.org/docs/Web/CSS/border-inline-end-style
Optional borderThe border-inline-end-width CSS property defines the width of the logical inline-end border of an element, which maps to a physical border width depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-width, border-right-width, border-bottom-width, or border-left-width property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-width'>
Initial value: medium
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 69 | 41 | 12.1 | 79 | No |
| 3 (-moz-border-end-width) |
https://developer.mozilla.org/docs/Web/CSS/border-inline-end-width
Optional borderThe border-inline-start CSS property is a shorthand property for setting the individual logical inline-start border property values in a single place in the style sheet.
Syntax: <'border-top-width'> || <'border-top-style'> || <color>
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 69 | 41 | 12.1 | 79 | No |
https://developer.mozilla.org/docs/Web/CSS/border-inline-start
Optional borderThe border-inline-start-color CSS property defines the color of the logical inline start border of an element, which maps to a physical border color depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-color, border-right-color, border-bottom-color, or border-left-color property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-color'>
Initial value: currentcolor
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 69 | 41 | 12.1 | 79 | No |
| 3 (-moz-border-start-color) |
https://developer.mozilla.org/docs/Web/CSS/border-inline-start-color
Optional borderThe border-inline-start-style CSS property defines the style of the logical inline start border of an element, which maps to a physical border style depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-style, border-right-style, border-bottom-style, or border-left-style property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-style'>
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 69 | 41 | 12.1 | 79 | No |
| 3 (-moz-border-start-style) |
https://developer.mozilla.org/docs/Web/CSS/border-inline-start-style
Optional borderThe border-inline-start-width CSS property defines the width of the logical inline-start border of an element, which maps to a physical border width depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-width, border-right-width, border-bottom-width, or border-left-width property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-width'>
Initial value: medium
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 69 | 41 | 12.1 | 79 | No |
https://developer.mozilla.org/docs/Web/CSS/border-inline-start-width
Optional borderThe border-inline-style CSS property defines the style of the logical inline borders of an element, which maps to a physical border style depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-style and border-bottom-style, or border-left-style and border-right-style properties depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-style'>
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 87 | 66 | 14.1 | 87 | No |
https://developer.mozilla.org/docs/Web/CSS/border-inline-style
Optional borderThe border-inline-width CSS property defines the width of the logical inline borders of an element, which maps to a physical border width depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-width and border-bottom-width, or border-left-width, and border-right-width property depending on the values defined for writing-mode, direction, and text-orientation.
Syntax: <'border-top-width'>
Initial value: medium
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 87 | 66 | 14.1 | 87 | No |
https://developer.mozilla.org/docs/Web/CSS/border-inline-width
Optional borderThe border-left shorthand CSS property sets all the properties of an element's left border.
Syntax: <line-width> || <line-style> || <color>
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
Optional borderThe border-left-color CSS property sets the color of an element's left border. It can also be set with the shorthand CSS properties border-color or border-left.
Syntax: <color>
Initial value: currentcolor
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
https://developer.mozilla.org/docs/Web/CSS/border-left-color
Optional borderThe border-left-style CSS property sets the line style of an element's left border.
Syntax: <line-style>
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 5.5 |
https://developer.mozilla.org/docs/Web/CSS/border-left-style
Optional borderThe border-left-width CSS property sets the width of the left border of an element.
Syntax: <line-width>
Initial value: medium
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
https://developer.mozilla.org/docs/Web/CSS/border-left-width
Optional borderThe border-radius CSS property rounds the corners of an element's outer border edge. You can set a single radius to make circular corners, or two radii to make elliptical corners.
Syntax: <length-percentage>{1,4} [ / <length-percentage>{1,4} ]?
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 4 | 4 | 5 | 12 | 9 |
| 1 -x- | 3 -x- |
Optional borderThe border-right shorthand CSS property sets all the properties of an element's right border.
Syntax: <line-width> || <line-style> || <color>
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 5.5 |
Optional borderThe border-right-color CSS property sets the color of an element's right border. It can also be set with the shorthand CSS properties border-color or border-right.
Syntax: <color>
Initial value: currentcolor
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
https://developer.mozilla.org/docs/Web/CSS/border-right-color
Optional borderThe border-right-style CSS property sets the line style of an element's right border.
Syntax: <line-style>
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 5.5 |
https://developer.mozilla.org/docs/Web/CSS/border-right-style
Optional borderThe border-right-width CSS property sets the width of the right border of an element.
Syntax: <line-width>
Initial value: medium
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
https://developer.mozilla.org/docs/Web/CSS/border-right-width
Optional borderThe border-spacing CSS property sets the distance between the borders of adjacent <table> cells. This property applies only when border-collapse is separate.
Syntax: <length> <length>?
Initial value: 0
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 8 |
Optional borderThe border-start-end-radius CSS property defines a logical border radius on an element, which maps to a physical border radius depending on the element's writing-mode, direction, and text-orientation. This is useful when building styles to work regardless of the text orientation and writing mode.
Syntax: <length-percentage>{1,2}
Initial value: 0
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 89 | 66 | 15 | 89 | No |
https://developer.mozilla.org/docs/Web/CSS/border-start-end-radius
Optional borderThe border-start-start-radius CSS property defines a logical border radius on an element, which maps to a physical border radius that depends on the element's writing-mode, direction, and text-orientation. This is useful when building styles to work regardless of the text orientation and writing mode.
Syntax: <length-percentage>{1,2}
Initial value: 0
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 89 | 66 | 15 | 89 | No |
https://developer.mozilla.org/docs/Web/CSS/border-start-start-radius
Optional borderThe border-style shorthand CSS property sets the line style for all four sides of an element's border.
Syntax: <line-style>{1,4}
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
Optional borderThe border-top shorthand CSS property sets all the properties of an element's top border.
Syntax: <line-width> || <line-style> || <color>
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
Optional borderThe border-top-color CSS property sets the color of an element's top border. It can also be set with the shorthand CSS properties border-color or border-top.
Syntax: <color>
Initial value: currentcolor
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
Optional borderThe border-top-left-radius CSS property rounds the top-left corner of an element by specifying the radius (or the radius of the semi-major and semi-minor axes) of the ellipse defining the curvature of the corner.
Syntax: <length-percentage>{1,2}
Initial value: 0
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 4 | 4 | 5 | 12 | 9 |
| 1 -x- | 3 -x- |
https://developer.mozilla.org/docs/Web/CSS/border-top-left-radius
Optional borderThe border-top-right-radius CSS property rounds the top-right corner of an element by specifying the radius (or the radius of the semi-major and semi-minor axes) of the ellipse defining the curvature of the corner.
Syntax: <length-percentage>{1,2}
Initial value: 0
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 4 | 4 | 5 | 12 | 9 |
| 1 -x- | 3 -x- |
https://developer.mozilla.org/docs/Web/CSS/border-top-right-radius
Optional borderThe border-top-style CSS property sets the line style of an element's top border.
Syntax: <line-style>
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 5.5 |
Optional borderThe border-top-width CSS property sets the width of the top border of an element.
Syntax: <line-width>
Initial value: medium
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
Optional borderThe border-width shorthand CSS property sets the width of an element's border.
Syntax: <line-width>{1,4}
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
Optional bottomThe bottom CSS property participates in setting the vertical position of a positioned element. It has no effect on non-positioned elements.
Syntax: <length> | <percentage> | auto
Initial value: auto
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 5 |
Optional boxThe box-align CSS property specifies how an element aligns its contents across its layout in a perpendicular direction. The effect of the property is only visible if there is extra space in the box.
Syntax: start | center | end | baseline | stretch
Initial value: stretch
Optional boxThe box-decoration-break CSS property specifies how an element's fragments should be rendered when broken across multiple lines, columns, or pages.
Syntax: slice | clone
Initial value: slice
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 22 -x- | 32 | 7 -x- | 79 -x- | No |
https://developer.mozilla.org/docs/Web/CSS/box-decoration-break
Optional boxThe box-direction CSS property specifies whether a box lays out its contents normally (from the top or left edge), or in reverse (from the bottom or right edge).
Syntax: normal | reverse | inherit
Initial value: normal
Optional boxThe -moz-box-flex and -webkit-box-flex CSS properties specify how a -moz-box or -webkit-box grows to fill the box that contains it, in the direction of the containing box's layout.
Syntax: <number>
Initial value: 0
Optional boxThe box-flex-group CSS property assigns the flexbox's child elements to a flex group.
Syntax: <integer>
Initial value: 1
Optional boxThe box-lines CSS property determines whether the box may have a single or multiple lines (rows for horizontally oriented boxes, columns for vertically oriented boxes).
Syntax: single | multiple
Initial value: single
Optional boxThe box-ordinal-group CSS property assigns the flexbox's child elements to an ordinal group.
Syntax: <integer>
Initial value: 1
Optional boxThis is a property of the original CSS Flexible Box Layout Module draft, and has been replaced by a newer standard. See flexbox for information about the current standard.
Syntax: horizontal | vertical | inline-axis | block-axis | inherit
Initial value: inline-axis (horizontal in XUL)
Optional boxThe -moz-box-pack and -webkit-box-pack CSS properties specify how a -moz-box or -webkit-box packs its contents in the direction of its layout. The effect of this is only visible if there is extra space in the box.
Syntax: start | center | end | justify
Initial value: start
Optional boxThe box-shadow CSS property adds shadow effects around an element's frame. You can set multiple effects separated by commas. A box shadow is described by X and Y offsets relative to the element, blur and spread radius, and color.
Syntax: none | <shadow>#
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 10 | 4 | 5.1 | 12 | 9 |
| 1 -x- | 3 -x- |
Optional boxThe box-sizing CSS property sets how the total width and height of an element is calculated.
Syntax: content-box | border-box
Initial value: content-box
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 10 | 29 | 5.1 | 12 | 8 |
| 1 -x- | 1 -x- | 3 -x- |
Optional breakThe break-after CSS property sets how page, column, or region breaks should behave after a generated box. If there is no generated box, the property is ignored.
Syntax: auto | avoid | always | all | avoid-page | page | left | right | recto | verso | avoid-column | column | avoid-region | region
Initial value: auto
Supported in Multi-column Layout
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 50 | 65 | No | 12 | 10 |
Supported in Paged Media
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 50 | 65 | 10 | 12 | 10 |
Optional breakThe break-before CSS property sets how page, column, or region breaks should behave before a generated box. If there is no generated box, the property is ignored.
Syntax: auto | avoid | always | all | avoid-page | page | left | right | recto | verso | avoid-column | column | avoid-region | region
Initial value: auto
Supported in Multi-column Layout
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 50 | 65 | No | 12 | 10 |
Supported in Paged Media
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 50 | 65 | 10 | 12 | 10 |
Optional breakThe break-inside CSS property sets how page, column, or region breaks should behave inside a generated box. If there is no generated box, the property is ignored.
Syntax: auto | avoid | avoid-page | avoid-column | avoid-region
Initial value: auto
Supported in Multi-column Layout
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 50 | 65 | 10 | 12 | 10 |
Supported in Paged Media
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 50 | 65 | 10 | 12 | 10 |
Optional captionThe caption-side CSS property puts the content of a table's <caption> on the specified side. The values are relative to the writing-mode of the table.
Syntax: top | bottom | block-start | block-end | inline-start | inline-end
Initial value: top
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 8 |
Optional caretThe caret-color CSS property sets the color of the insertion caret, the visible marker where the next character typed will be inserted. This is sometimes referred to as the text input cursor. The caret appears in elements such as <input> or those with the contenteditable attribute. The caret is typically a thin vertical line that flashes to help make it more noticeable. By default, it is black, but its color can be altered with this property.
Syntax: auto | <color>
Initial value: auto
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 57 | 53 | 11.1 | 79 | No |
Optional clearThe clear CSS property sets whether an element must be moved below (cleared) floating elements that precede it. The clear property applies to floating and non-floating elements.
Syntax: none | left | right | both | inline-start | inline-end
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
Optional clipThe clip CSS property defines a visible portion of an element. The clip property applies only to absolutely positioned elements — that is, elements with position:absolute or position:fixed.
Syntax: <shape> | auto
Initial value: auto
Optional clipThe **clip-path** CSS property creates a clipping region that sets what part of an element should be shown. Parts that are inside the region are shown, while those outside are hidden.
Syntax: <clip-source> | [ <basic-shape> || <geometry-box> ] | none
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 55 | 3.5 | 9.1 | 12 | 10 |
| 23 -x- | 6.1 -x- |
Optional clipOptional colorThe color CSS property sets the foreground color value of an element's text and text decorations, and sets the <currentcolor> value. currentcolor may be used as an indirect value on other properties and is the default for other color properties, such as border-color.
Syntax: <color>
Initial value: Varies from one browser to another
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 3 |
Optional colorThe color-adjust CSS property sets what, if anything, the user agent may do to optimize the appearance of the element on the output device. By default, the browser is allowed to make any adjustments to the element's appearance it determines to be necessary and prudent given the type and capabilities of the output device.
Syntax: economy | exact
Initial value: economy
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 49 (-webkit-print-color-adjust) | 48 | 6 (-webkit-print-color-adjust) | 79 (-webkit-print-color-adjust) | No |
Optional colorOptional colorOptional colorThe color-scheme CSS property allows an element to indicate which color schemes it can comfortably be rendered in.
Syntax: normal | [ light | dark | <custom-ident> ]+
Initial value: normal
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 81 | No | 13 | 81 | No |
Optional columnThe column-count CSS property breaks an element's content into the specified number of columns.
Syntax: <integer> | auto
Initial value: auto
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 50 | 52 | 9 | 12 | 10 |
| 1 -x- | 3 -x- |
Optional columnThe column-fill CSS property controls how an element's contents are balanced when broken into columns.
Syntax: auto | balance | balance-all
Initial value: balance
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 50 | 52 | 9 | 12 | 10 |
| 8 -x- |
Optional columnThe column-gap CSS property sets the size of the gap (gutter) between an element's columns.
Syntax: normal | <length-percentage>
Initial value: normal
Supported in Flex Layout
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 84 | 63 | 14.1 | 84 | No |
Supported in Grid Layout
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 66 | 61 | 12 | 16 | No |
| 57 (grid-column-gap) | 52 (grid-column-gap) | 10.1 (grid-column-gap) |
Supported in Multi-column Layout
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 50 | 52 | 10 | 12 | 10 |
| 1 -x- | 3 -x- |
Optional columnThe column-rule shorthand CSS property sets the width, style, and color of the line drawn between columns in a multi-column layout.
Syntax: <'column-rule-width'> || <'column-rule-style'> || <'column-rule-color'>
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 50 | 52 | 9 | 12 | 10 |
| 1 -x- | 3 -x- |
Optional columnThe column-rule-color CSS property sets the color of the line drawn between columns in a multi-column layout.
Syntax: <color>
Initial value: currentcolor
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 50 | 52 | 9 | 12 | 10 |
| 1 -x- | 3 -x- |
https://developer.mozilla.org/docs/Web/CSS/column-rule-color
Optional columnThe column-rule-style CSS property sets the style of the line drawn between columns in a multi-column layout.
Syntax: <'border-style'>
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 50 | 52 | 9 | 12 | 10 |
| 1 -x- | 3 -x- |
https://developer.mozilla.org/docs/Web/CSS/column-rule-style
Optional columnThe column-rule-width CSS property sets the width of the line drawn between columns in a multi-column layout.
Syntax: <'border-width'>
Initial value: medium
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 50 | 52 | 9 | 12 | 10 |
| 1 -x- | 3 -x- |
https://developer.mozilla.org/docs/Web/CSS/column-rule-width
Optional columnThe column-span CSS property makes it possible for an element to span across all columns when its value is set to all.
Syntax: none | all
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 50 | 71 | 9 | 12 | 10 |
| 6 -x- | 5.1 -x- |
Optional columnThe column-width CSS property sets the ideal column width in a multi-column layout. The container will have as many columns as can fit without any of them having a width less than the column-width value. If the width of the container is narrower than the specified value, the single column's width will be smaller than the declared column width.
Syntax: <length> | auto
Initial value: auto
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 50 | 50 | 9 | 12 | 10 |
| 1 -x- | 3 -x- |
Optional columnsThe columns CSS shorthand property sets the number of columns to use when drawing an element's contents, as well as those columns' widths.
Syntax: <'column-width'> || <'column-count'>
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 50 | 52 | 9 | 12 | 10 |
| 3 -x- |
Optional containThe contain CSS property allows an author to indicate that an element and its contents are, as much as possible, independent of the rest of the document tree. This allows the browser to recalculate layout, style, paint, size, or any combination of them for a limited area of the DOM and not the entire page, leading to obvious performance benefits.
Syntax: none | strict | content | [ size || layout || style || paint ]
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 52 | 69 | No | 79 | No |
Optional contentThe content CSS property replaces an element with a generated value. Objects inserted using the content property are anonymous replaced elements.
Syntax: normal | none | [ <content-replacement> | <content-list> ] [/ <string> ]?
Initial value: normal
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 8 |
Optional contentThe content-visibility CSS property controls whether or not an element renders its contents at all, along with forcing a strong set of containments, allowing user agents to potentially omit large swathes of layout and rendering work until it becomes needed. Basically it enables the user agent to skip an element's rendering work, including layout and painting, until it is needed, makes the initial page load much faster.
Syntax: visible | auto | hidden
Initial value: visible
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 85 | No | No | 85 | No |
https://developer.mozilla.org/docs/Web/CSS/content-visibility
Optional counterThe counter-increment CSS property increases or decreases the value of a CSS counter by a given value.
Syntax: [ <custom-ident> <integer>? ]+ | none
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 2 | 1 | 3 | 12 | 8 |
https://developer.mozilla.org/docs/Web/CSS/counter-increment
Optional counterThe counter-reset CSS property resets a CSS counter to a given value.
Syntax: [ <custom-ident> <integer>? ]+ | none
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 2 | 1 | 3 | 12 | 8 |
Optional counterThe counter-set CSS property sets a CSS counter to a given value. It manipulates the value of existing counters, and will only create new counters if there isn't already a counter of the given name on the element.
Syntax: [ <custom-ident> <integer>? ]+ | none
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 85 | 68 | No | 85 | No |
Optional cursorThe cursor CSS property sets the type of mouse cursor, if any, to show when the mouse pointer is over an element.
Syntax: [ [ <url> [ <x> <y> ]? , ]* [ auto | default | none | context-menu | help | pointer | progress | wait | cell | crosshair | text | vertical-text | alias | copy | move | no-drop | not-allowed | e-resize | n-resize | ne-resize | nw-resize | s-resize | se-resize | sw-resize | w-resize | ew-resize | ns-resize | nesw-resize | nwse-resize | col-resize | row-resize | all-scroll | zoom-in | zoom-out | grab | grabbing ] ]
Initial value: auto
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1.2 | 12 | 4 |
Optional directionThe direction CSS property sets the direction of text, table columns, and horizontal overflow. Use rtl for languages written from right to left (like Hebrew or Arabic), and ltr for those written from left to right (like English and most other languages).
Syntax: ltr | rtl
Initial value: ltr
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 2 | 1 | 1 | 12 | 5.5 |
Optional displayThe display CSS property sets whether an element is treated as a block or inline element and the layout used for its children, such as flow layout, grid or flex.
Syntax: [ <display-outside> || <display-inside> ] | <display-listitem> | <display-internal> | <display-box> | <display-legacy>
Initial value: inline
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
Optional dominantOptional emptyThe empty-cells CSS property sets whether borders and backgrounds appear around <table> cells that have no visible content.
Syntax: show | hide
Initial value: show
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1.2 | 12 | 8 |
Optional fillOptional fillOptional fillOptional filterThe filter CSS property applies graphical effects like blur or color shift to an element. Filters are commonly used to adjust the rendering of images, backgrounds, and borders.
Syntax: none | <filter-function-list>
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 53 | 35 | 9.1 | 12 | No |
| 18 -x- | 6 -x- |
Optional flexThe flex CSS shorthand property sets how a flex item will grow or shrink to fit the space available in its flex container.
Syntax: none | [ <'flex-grow'> <'flex-shrink'>? || <'flex-basis'> ]
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 29 | 20 | 9 | 12 | 11 |
| 21 -x- | 7 -x- | 10 -x- |
Optional flexThe flex-basis CSS property sets the initial main size of a flex item. It sets the size of the content box unless otherwise set with box-sizing.
Syntax: content | <'width'>
Initial value: auto
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 29 | 22 | 9 | 12 | 11 |
| 22 -x- | 7 -x- |
Optional flexThe flex-direction CSS property sets how flex items are placed in the flex container defining the main axis and the direction (normal or reversed).
Syntax: row | row-reverse | column | column-reverse
Initial value: row
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 29 | 20 | 9 | 12 | 11 |
| 21 -x- | 7 -x- | 10 -x- |
Optional flexThe flex-flow CSS shorthand property specifies the direction of a flex container, as well as its wrapping behavior.
Syntax: <'flex-direction'> || <'flex-wrap'>
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 29 | 28 | 9 | 12 | 11 |
| 21 -x- | 7 -x- |
Optional flexThe flex-grow CSSÂ property sets the flex grow factor of a flex item main size.
Syntax: <number>
Initial value: 0
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 29 | 20 | 9 | 12 | 11 |
| 22 -x- | 7 -x- | 10 (-ms-flex-positive) |
Optional flexThe flex-shrink CSS property sets the flex shrink factor of a flex item. If the size of all flex items is larger than the flex container, items shrink to fit according to flex-shrink.
Syntax: <number>
Initial value: 1
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 29 | 20 | 9 | 12 | 10 |
| 22 -x- | 8 -x- |
Optional flexThe flex-wrap CSS property sets whether flex items are forced onto one line or can wrap onto multiple lines. If wrapping is allowed, it sets the direction that lines are stacked.
Syntax: nowrap | wrap | wrap-reverse
Initial value: nowrap
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 29 | 28 | 9 | 12 | 11 |
| 21 -x- | 6.1 -x- |
Optional floatThe float CSS property places an element on the left or right side of its container, allowing text and inline elements to wrap around it. The element is removed from the normal flow of the page, though still remaining a part of the flow (in contrast to absolute positioning).
Syntax: left | right | none | inline-start | inline-end
Initial value: none
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 4 |
Optional floodOptional floodOptional fontThe font CSS shorthand property sets all the different properties of an element's font. Alternatively, it sets an element's font to a system font.
Syntax: [ [ <'font-style'> || <font-variant-css21> || <'font-weight'> || <'font-stretch'> ]? <'font-size'> [ / <'line-height'> ]? <'font-family'> ] | caption | icon | menu | message-box | small-caption | status-bar
| Chrome | Firefox | Safari | Edge | IE |
|---|---|---|---|---|
| 1 | 1 | 1 | 12 | 3 |
The
box-alignCSS property specifies how an element aligns its contents across its layout in a perpendicular direction. The effect of the property is only visible if there is extra space in the box.Syntax:
start | center | end | baseline | stretchInitial value:
stretchDeprecated