border-block-start-style

The border-block-start-style CSS property defines the style of the logical block start border of an element, which maps to a physical border style depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-styleborder-right-styleborder-bottom-style, or border-left-style property depending on the values defined for writing-mode, direction, and text-orientation.

Syntax

/* <'border-style'> values */
border-block-start-style: dashed;
border-block-start-style: dotted;
border-block-start-style: groove;

Related properties are border-block-end-styleborder-inline-start-style, and border-inline-end-style, which define the other border styles of the element.

Values

<'border-style'>
The line style of the border. See border-style.

Formal definition

Initial valuenone
Applies toall elements
Inheritedno
Computed valueas specified
Animation typediscrete

Formal syntax

<'border-top-style'>

Examples

Dashed border wtih 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: 5px solid blue;
  border-block-start-style: dashed;
}

Results

Specifications

Browser compatibility

BCD tables only load in the browser

See also