border-inline-start-color

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2021.

The border-inline-start-colorCSS 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.

Try it

border-inline-start-color: red; writing-mode: horizontal-tb;

border-inline-start-color: #32a1ce; writing-mode: vertical-rl;

border-inline-start-color: rgb(170, 50, 220, 0.6); writing-mode: horizontal-tb; direction: rtl;

<section class="default-example" id="default-example"> <div class="transition-all" id="example-element"> This is a box with a border around it. </div> </section>

#example-element { background-color: #eee; color: #000; border: 0.75em solid; padding: 0.75em; width: 80%; height: 100px; unicode-bidi: bidi-override; }

Syntax

css

border-inline-start-color: red; border-inline-start-color: #ee4141; /* Global values */ border-inline-start-color: inherit; border-inline-start-color: initial; border-inline-start-color: revert; border-inline-start-color: revert-layer; border-inline-start-color: unset;

Related properties are border-block-start-color, border-block-end-color, and border-inline-end-color, which define the other border colors of the element.

Values

<color>: The color of the border.

Formal definition

Initial value	`currentcolor`
Applies to	all elements
Inherited	no
Computed value	computed color
Animation type	by computed value type

Formal syntax

border-inline-start-color = 
<color>|
<image-1D>

<image-1D> = 
<stripes()>

<stripes()> = 
stripes(<color-stripe>#)

<color-stripe> = 
<color>&&
[<length-percentage>|<flex>]?

<length-percentage> = 
<length>|
<percentage>

Examples

HTML

html

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

CSS

css

div { background-color: yellow; width: 120px; height: 120px; } .exampleText { writing-mode: vertical-lr; border: 10px solid blue; border-inline-start-color: red; }

Specifications

Specification
CSS Logical Properties and Values Level 1 # border-color