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.

border-block-color: yellow;
border-block-color: #F5F6F7;

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

Values

<'color'>

The color of the border. See color.

Formal definition

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

Browser compatibilityUpdate compatibility data on GitHub

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