border-top | CSS CSS Properties

A shorthand for setting the width, style, and color of the physical top border in a single declaration.

Quick example

header {
  /* physical shorthand: width | style | color */
  border-top: 1px solid #e5e7eb;
  margin-top: 2rem;
}

Initial value

See individual properties

Inherited

Applies to

all elements

Widely available Since 2015 96% global usage

This feature is well established and works across many devices and browser versions. It has been available across browsers since 2015.

Safe to use without fallbacks.

12+