The border-inline-style CSS property defines the style of the logical inline 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.

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


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

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



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

Formal definition

Initial valuenone
Applies toall elements
Computed valueas specified
Animation typediscrete

Formal syntax

border-inline-style = 


HTML Content

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

CSS Content

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

.exampleText {
  writing-mode: vertical-lr;
  border: 5px solid blue;
  border-inline-style: dashed;


CSS Logical Properties and Values Level 1
# propdef-border-inline-style

Browser compatibility

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See also