The border-inline-start CSS property is a shorthand property for setting the individual logical inline-start border property values in a single place in the style sheet.

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Constituent properties

This property is a shorthand for the following CSS properties:


border-inline-start: 1px;
border-inline-start: 2px dotted;
border-inline-start: medium dashed green;

/* Global values */
border-inline-start: inherit;
border-inline-start: initial;
border-inline-start: revert;
border-inline-start: revert-layer;
border-inline-start: unset;

The physical border to which border-inline-start maps depends on the element's writing mode, directionality, and text orientation. It corresponds to the border-top, border-right, border-bottom, or border-left property depending on the values defined for writing-mode, direction, and text-orientation.

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


The border-inline-start is specified with one or more of the following, in any order:


The width of the border. See border-width.


The line style of the border. See border-style.


The color of the border.

Formal definition

Initial valueas each of the properties of the shorthand:
Applies toall elements
Computed valueas each of the properties of the shorthand:
Animation typeas each of the properties of the shorthand:

Formal syntax

border-inline-start = 
<'border-top-width'> ||
<'border-top-style'> ||



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


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

.exampleText {
  writing-mode: vertical-rl;
  border-inline-start: 5px dashed blue;


CSS Logical Properties and Values Level 1
# border-shorthands

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See also