Interface VendorPropertiesFallback<TLength, TTime>

The 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.

The 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.

The animation-direction CSS property sets whether an animation should play forward, backward, or alternate back and forth between playing the sequence forward and backward.

The animation-duration CSS property sets the length of time that an animation takes to complete one cycle.

The animation-fill-mode CSS property sets how a CSS animation applies styles to its target before and after its execution.

The animation-iteration-count CSS property sets the number of times an animation sequence should be played before stopping.

The animation-name CSS property specifies the names of one or more @keyframes at-rules describing the animation or animations to apply to the element.

The animation-play-state CSS property sets whether an animation is running or paused.

The animation-timing-function CSS property sets how an animation progresses through the duration of each cycle.

The 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.

The backface-visibility CSS property sets whether the back face of an element is visible when turned towards the user.

In Mozilla applications like Firefox, the -moz-border-bottom-colors CSS property sets a list of colors for the bottom border.

The 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.

The 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.

The 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.

The border-image CSS property draws an image around a given element. It replaces the element's regular border.

In Mozilla applications like Firefox, the -moz-border-left-colors CSS property sets a list of colors for the left border.

In Mozilla applications like Firefox, the -moz-border-right-colors CSS property sets a list of colors for the right border.

The 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.

The 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.

In Mozilla applications like Firefox, the -moz-border-top-colors CSS property sets a list of colors for the top border.

The box-sizing CSS property sets how the total width and height of an element is calculated.

The column-count CSS property breaks an element's content into the specified number of columns.

The column-fill CSS property controls how an element's contents are balanced when broken into columns.

The column-gap CSS property sets the size of the gap (gutter) between an element's columns.

The column-rule shorthand CSS property sets the width, style, and color of the line drawn between columns in a multi-column layout.

The column-rule-color CSS property sets the color of the line drawn between columns in a multi-column layout.

The column-rule-style CSS property sets the style of the line drawn between columns in a multi-column layout.

The column-rule-width CSS property sets the width of the line drawn between columns in a multi-column layout.

The 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.

The columns CSS shorthand property sets the number of columns to use when drawing an element's contents, as well as those columns' widths.

The -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.

The font-feature-settings CSS property controls advanced typographic features in OpenType fonts.

The font-language-override CSS property controls the use of language-specific glyphs in a typeface.

The 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.

For 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.

The 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.

The 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.

The -moz-orient CSS property specifies the orientation of the element to which it's applied.

The font-smooth CSS property controls the application of anti-aliasing when fonts are rendered.

The 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.

The 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.

The perspective CSS property determines the distance between the z=0 plane and the user in order to give a 3D-positioned element some perspective.

The perspective-origin CSS property determines the position at which the viewer is looking. It is used as the vanishing point by the perspective property.

-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.

The tab-size CSS property is used to customize the width of tab characters (U+0009).

The -moz-text-blink non-standard Mozilla CSS extension specifies the blink mode.

The text-size-adjust CSS property controls the text inflation algorithm used on some smartphones and tablets. Other browsers will ignore this property.

The transform-origin CSS property sets the origin for an element's transformations.

The 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.

The transition CSS property is a shorthand property for transition-property, transition-duration, transition-timing-function, and transition-delay.

The transition-delay CSS property specifies the duration to wait before starting a property's transition effect when its value changes.

The 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.

The transition-property CSS property sets the CSS properties to which a transition effect should be applied.

The transition-timing-function CSS property sets how intermediate values are calculated for CSS properties being affected by a transition effect.

The -moz-user-focus CSS property is used to indicate whether an element can have the focus.

The 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.

The user-select CSS property controls whether the user can select text. This doesn't have any effect on content loaded as part of a browser's user interface (its chrome), except in textboxes.

The -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.

The -moz-window-shadow CSS property specifies whether a window will have a shadow. It only works on Mac OS X.

The 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.

The 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.

The 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.

The 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.

The 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.

The animation-direction CSS property sets whether an animation should play forward, backward, or alternate back and forth between playing the sequence forward and backward.

The animation-duration CSS property sets the length of time that an animation takes to complete one cycle.

The animation-fill-mode CSS property sets how a CSS animation applies styles to its target before and after its execution.

The animation-iteration-count CSS property sets the number of times an animation sequence should be played before stopping.

The animation-name CSS property specifies the names of one or more @keyframes at-rules describing the animation or animations to apply to the element.

The animation-play-state CSS property sets whether an animation is running or paused.

The animation-timing-function CSS property sets how an animation progresses through the duration of each cycle.

The 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.

The 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.

The backface-visibility CSS property sets whether the back face of an element is visible when turned towards the user.

The background-clip CSS property sets whether an element's background extends underneath its border box, padding box, or content box.

The background-origin CSS property sets the background's origin: from the border start, inside the border, or inside the padding.

The 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.

The -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: <color>

Syntax: <'border-style'>

Syntax: <'border-width'>

The 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.

The 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.

The border-image CSS property draws an image around a given element. It replaces the element's regular border.

The 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.

The 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.

The 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.

The 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.

The box-decoration-break CSS property specifies how an element's fragments should be rendered when broken across multiple lines, columns, or pages.

The -webkit-box-reflect CSS property lets you reflect the content of an element in one specific direction.

The 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.

The box-sizing CSS property sets how the total width and height of an element is calculated.

The 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.

The column-count CSS property breaks an element's content into the specified number of columns.

The column-fill CSS property controls how an element's contents are balanced when broken into columns.

The column-gap CSS property sets the size of the gap (gutter) between an element's columns.

The column-rule shorthand CSS property sets the width, style, and color of the line drawn between columns in a multi-column layout.

The column-rule-color CSS property sets the color of the line drawn between columns in a multi-column layout.

The column-rule-style CSS property sets the style of the line drawn between columns in a multi-column layout.

The column-rule-width CSS property sets the width of the line drawn between columns in a multi-column layout.

The column-span CSS property makes it possible for an element to span across all columns when its value is set to all.

The 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.

The columns CSS shorthand property sets the number of columns to use when drawing an element's contents, as well as those columns' widths.

The 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.

The flex CSS shorthand property sets how a flex item will grow or shrink to fit the space available in its flex container.

The 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.

The flex-direction CSS property sets how flex items are placed in the flex container defining the main axis and the direction (normal or reversed).

The flex-flow CSS shorthand property specifies the direction of a flex container, as well as its wrapping behavior.

The flex-grow CSS property sets the flex grow factor of a flex item's main size.

The 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.

The 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.

The font-feature-settings CSS property controls advanced typographic features in OpenType fonts.

The font-kerning CSS property sets the use of the kerning information stored in a font.

The font-smooth CSS property controls the application of anti-aliasing when fonts are rendered.

The 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.

The hyphenate-character CSS property sets the character (or string) used at the end of a line before a hyphenation break.

The 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.

The initial-letter CSS property sets styling for dropped, raised, and sunken initial letters.

The 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.

The line-break CSS property sets how to break lines of Chinese, Japanese, or Korean (CJK) text when working with punctuation and symbols.

The -webkit-line-clamp CSS property allows limiting of the contents of a block container to the specified number of lines.

The 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.

The 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.

The mask CSS shorthand property hides an element (partially or fully) by masking or clipping the image at specific points.

If 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.

The mask-border CSS shorthand property lets you create a mask along the edge of an element's border.

The mask-border-outset CSS property specifies the distance by which an element's mask border is set out from its border box.

The 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.

The 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.

The mask-border-source CSS property sets the source image used to create an element's mask border.

The mask-border-width CSS property sets the width of an element's mask border.

The 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.

The -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.

The mask-image CSS property sets the image that is used as mask layer for an element. By default this means the alpha channel of the mask image will be multiplied with the alpha channel of the element. This can be controlled with the mask-mode property.

The mask-origin CSS property sets the origin of a mask.

The mask-position CSS property sets the initial position, relative to the mask position layer set by mask-origin, for each defined mask image.

The -webkit-mask-position-x CSS property sets the initial horizontal position of a mask image.

The -webkit-mask-position-y CSS property sets the initial vertical position of a mask image.

The 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.

The -webkit-mask-repeat-x property specifies whether and how a mask image is repeated (tiled) horizontally.

The -webkit-mask-repeat-y property sets whether and how a mask image is repeated (tiled) vertically.

The 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.

The 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.

The 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.

The -webkit-overflow-scrolling CSS property controls whether or not touch devices use momentum-based scrolling for a given element.

The 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.

The 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.

The perspective CSS property determines the distance between the z=0 plane and the user in order to give a 3D-positioned element some perspective.

The perspective-origin CSS property determines the position at which the viewer is looking. It is used as the vanishing point by the perspective property.

The print-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.

The ruby-position CSS property defines the position of a ruby element relatives to its base element. It can be positioned over the element (over), under it (under), or between the characters on their right side (inter-character).

The scroll-snap-type CSS property sets how strictly snap points are enforced on the scroll container in case there is one.

The shape-margin CSS property sets a margin for a CSS shape created using shape-outside.

-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.

The 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.

The text-decoration-color CSS property sets the color of decorations added to text by text-decoration-line.

The text-decoration-line CSS property sets the kind of decoration that is used on text in an element, such as an underline or overline.

The 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.

The 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.

The 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.

The text-emphasis-color CSS property sets the color of emphasis marks. This value can also be set using the text-emphasis shorthand.

The 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.

The text-emphasis-style CSS property sets the appearance of emphasis marks. It can also be set, and reset, using the text-emphasis shorthand.

The -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.

The 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.

The text-size-adjust CSS property controls the text inflation algorithm used on some smartphones and tablets. Other browsers will ignore this property.

The -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.

The -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.

The -webkit-text-stroke-width CSS property specifies the width of the stroke for text.

The text-underline-position CSS property specifies the position of the underline which is set using the text-decoration property's underline value.

The -webkit-touch-callout CSS property controls the display of the default callout shown when you touch and hold a touch target.

The transform CSS property lets you rotate, scale, skew, or translate an element. It modifies the coordinate space of the CSS visual formatting model.

The transform-origin CSS property sets the origin for an element's transformations.