Web/CSS/border-block-style

The border-block-style CSS property defines the style of the logical block borders 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-style and border-bottom-style, or border-left-style and border-right-style properties depending on the values defined for writing-mode, direction, and text-orientation.

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

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

Syntax

Values

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

Formal definition

Initial value	`none`
Applies to	all elements
Inherited	no
Computed value	as specified
Animation type	discrete

Formal syntax

<'border-top-style'>

Examples

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

Results

Specifications

Specification	Status	Comment
CSS Logical Properties and Values Level 1The definition of 'border-block-style' in that specification.	Editor's Draft	Initial definition

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`border-block-style`	Chrome Full support 69	Edge Full support 79	Firefox Full support 66	IE No support No	Opera Full support 56	Safari No support No	WebView Android Full support 69	Chrome Android Full support 69	Firefox Android Full support 66	Opera Android Full support 48	Safari iOS No support No	Samsung Internet Android Full support 10.0

Legend

Full support: Full support
No support: No support