border-block
The most powerful logical shorthand for borders. It sets the width, style, and color of both the 'start' and 'end' borders in the block dimension with a single line of CSS.
It is documented as part of the CSS Logical Properties and Values specification.
Syntax
/* Usage Example */
.panel {
/* Sets a 1px solid gray border on both top and bottom edges */
border-block: 1px solid #ccc;
}
/* Syntax */
border-block: border-block-start;
/* Global values */
border-block: inherit;
border-block: initial;
border-block: revert;
border-block: revert-layer;
border-block: unset;border-block Browser support
Widely available
Since
2021 95% global usage
This feature is well established and works across many devices and browser versions. It has been available across browsers since 2021.
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