border-block-start-color | CSS CSS Properties

Sets the color of the 'start' side of the block dimension (usually the top border). Part of the logical properties set for more flexible layout systems.

Quick example

.sticky-header {
  border-block-start-color: #f8fafc;
  border-block-start-style: solid;
  border-block-start-width: 1px;
}

Quick facts

Initial value

currentcolor

Inherited

Applies to

all elements

Animation type

byComputedValueType

Values

border-top-color

border-block-start-color 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.

Safe to use without fallbacks.

View on caniuse.com → View on MDN → View on webstatus.dev → Learn more about Baseline →

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