CSS - border-block-start-width

Example

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

div {
  background-color: yellow;
  width: 120px;
  height: 120px;
}

.exampleText {
  writing-mode: vertical-lr;
  border: 1px solid blue;
  border-block-start-width: 5px;
}

Syntax  

/* border-block-start-width: width */
border-block-start-width: 5px;

border-block-start-width: inherit;

Values

<'border-width'>

See border-width

Formal syntax

<a href="css/border-width" title="&lt;br-width&gt;{1,4}"><'border-width'></a>

Description  

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

It relates to border-block-end-width, border-inline-start-width, and border-inline-end-width, which define the other border widths of the element.

Browser Compatibility  

[1] Available since Gecko 38, but behind the preference layout.css.vertical-text.enabled, then disabled by default.

See Also  

• The mapped physical properties: border-top-width, border-right-width, border-bottom-width, and border-left-width
• writing-mode, direction, text-orientation

License