Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
Summary
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. -webkit-border-before
can be used to set the values for one or more of: -webkit-border-before-width
, -webkit-border-before-style
, and -webkit-border-before-color
. It maps to a physical border depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top
, border-right
, border-bottom
, or border-left
property depending on the values defined for writing-mode
, direction
, and text-orientation
.
It relates to -webkit-border-after
, -webkit-border-start
, and -webkit-border-end
, which define the other borders of the element.
This property is on the standard track as border-block-start
.
Initial value | as each of the properties of the shorthand:
|
---|---|
Applies to | all elements |
Inherited | yes |
Percentages | as each of the properties of the shorthand:
|
Media | visual |
Computed value | as each of the properties of the shorthand:
|
Animatable | no |
Canonical order | the unique non-ambiguous order defined by the formal grammar |
Syntax
/* Border values */ -webkit-border-before: 1px; -webkit-border-before: 2px dotted; -webkit-border-before: medium dashed blue; /* Global values */ -webkit-border-before: inherit; -webkit-border-before: initial; -webkit-border-before: unset;
Values
One or more of the following, in any order:
<'border-width'>
- See
border-width
<'border-style'>
- See
border-style
<'color'>
- See
color
Formal syntax
<'border-width'> || <'border-style'> || <'color'>where
<color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>
where
<rgb()> = rgb( <rgb-component>#{3} )
<rgba()> = rgba( <rgb-component>#{3} , <alpha-value> )
<hsl()> = hsl( <hue>, <percentage>, <percentage> )
<hsla()> = hsla( <hue>, <percentage>, <percentage>, <alpha-value> )
<named-color> = <ident>
<deprecated-system-color> = ActiveBorder | ActiveCaption | AppWorkspace | Background | ButtonFace | ButtonHighlight | ButtonShadow | ButtonText | CaptionText | GrayText | Highlight | HighlightText | InactiveBorder | InactiveCaption | InactiveCaptionText | InfoBackground | InfoText | Menu | MenuText | Scrollbar | ThreeDDarkShadow | ThreeDFace | ThreeDHighlight | ThreeDLightShadow | ThreeDShadow | Window | WindowFrame | WindowTextwhere
<rgb-component> = <integer> | <percentage>
<alpha-value> = <number>
<hue> = <number>
Example
HTML Content
<div> <p class="exampleText">Example text</p> </div>
CSS Content
div { background-color: yellow; width: 120px; height: 120px; } .exampleText { writing-mode: vertical-rl; -webkit-border-before: 5px dashed blue; }
Specifications
Not part of any specification, though it relates to the border-block-start
property.
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|
Basic support | (Yes) | Not supported | Not supported | (Yes) | ? |
Feature | Android | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|
Basic support | ? | Not supported | Not supported | ? | ? |
See also
border-block-start
- The mapped physical properties:
border-top
,border-right
,border-bottom
, andborder-left
writing-mode
,direction
,text-orientation