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border-inline-start-width

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This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

Summary

The border-inline-start-width CSS property defines the width of the logical inline 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-widthborder-right-widthborder-bottom-width, or border-left-width property depending on the values defined for writing-mode, direction, and text-orientation.

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

Initial valuemedium
Applies toall elements
Inheritedno
Percentageslogical-width of containing block
Mediavisual
Computed valueabsolute length; 0 if the border style is none or hidden
Animatableno
Canonical orderthe unique non-ambiguous order defined by the formal grammar

Syntax

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

border-inline-start-width: inherit;

Values

<'border-width'>
See border-width

Formal syntax

<'border-width'>

Example

HTML Content

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

CSS Content

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

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

Specification

Specification Status Comment
CSS Logical Properties Level 1
The definition of 'border-inline-start-width' in that specification.
Editor's Draft Initial definition

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support No support 41.0 (41.0)[1] No support No support No support
Feature Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support No support 41.0 (41.0)[1] No support No support No support

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

See also

Document Tags and Contributors

 Contributors to this page: HTMLValidator, Sebastianz, fscholz, teoli, jsx, kscarfone
 Last updated by: HTMLValidator,