border-block-start-style
Determines the line style (solid, dashed, etc.) for the 'start' side border. In standard western layouts, this is the top border.
It is documented as part of the CSS Logical Properties and Values specification.
Syntax
/* Usage Example */
article {
border-block-start-style: dotted;
border-block-start-width: 2px;
border-block-start-color: #94a3b8;
}
/* Syntax */
border-block-start-style: border-top-style;
/* Global values */
border-block-start-style: inherit;
border-block-start-style: initial;
border-block-start-style: revert;
border-block-start-style: revert-layer;
border-block-start-style: unset;border-block-start-style 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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