The 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.

border-block-color: yellow; border-block-color: #F5F6F7;  /* Global values */ border-block-color: inherit; border-block-color: initial; border-block-color: revert; border-block-color: unset; 

border-block-color

The 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.

The border color in the other dimension can be set with border-inline-color which sets border-inline-start-color, and border-inline-end-color.

Syntax

border-block-color: yellow; border-block-color: #F5F6F7;  /* Global values */ border-block-color: inherit; border-block-color: initial; border-block-color: revert; border-block-color: unset; 

Values

<'color'>

The color of the border. See color.

Formal definition

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

Formal syntax

<'border-top-color'>{1,2}

Examples

Border with vertical text

HTML

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

CSS

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

Results

Specifications

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

See also

This property maps to the physical border properties: border-top-color, border-right-color, border-bottom-color, or border-left-color. writing-mode, direction, text-orientation+ bug 1297097

Last modified: Aug 12, 2021, by MDN contributors

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