CSS - border-inline-start-color


HTML Content

  <p class="exampleText">Example text</p>

CSS Content

div {
  background-color: yellow;
  width: 120px;
  height: 120px;

.exampleText {
  writing-mode: vertical-lr;
  border: 10px solid blue;
  border-inline-start-color: red;


border-inline-start-color: red;
border-inline-start-color: #fffff;
border-inline-start-color: rgb(200, 0, 0);

border-inline-start-color: unset;
border-inline-start-color: initial;
border-inline-start-color: inherit;


See border-color

Formal syntax


<color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>

<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 | WindowText

<rgb-component> = <integer> | <percentage>
<alpha-value> = <number>
<hue> = <number>


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-colorborder-right-colorborder-bottom-color, or border-left-color property depending on the values defined for writing-mode, direction, and text-orientation.

It relates to border-block-start-colorborder-block-end-color, and border-inline-end-color, which define the other border colors of the element.

Initial valuecurrentcolor
Applies toall elements
Computed valuecomputed color
Animation typediscrete
Canonical orderthe unique non-ambiguous order defined by the formal grammar

Browser Compatibility  

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support No support 41.0 (41.0)[1][2] No support No support No support
Feature Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support No support 41.0 (41.0)[1][2] No support No support No support

[1] Available since Gecko 38, but behind the preference layout.css.vertical-text.enabled, then disabled by default.

[2] Before Gecko 38, and after it, is available in a prefixed version, with a slightly different name, -moz-border-end-color.

See Also  


Specification Status Comment
CSS Logical Properties Level 1
The definition of 'border-inline-start-color' in that specification.
Editor's Draft Initial definition


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