Web platform features explorer

outline

The outline CSS shorthand sets the color, style, and width of a line around an element, outside of the border.

Status

Baseline Widely Available (since 2025-09-27)

MDN documentation

Browser support

  • Chrome 94 Released on 2021-09-21
  • Chrome Android 94 Released on 2021-09-21
  • Edge 94 Released on 2021-09-24
  • Firefox 88 Released on 2021-04-19
  • Firefox for Android 88 Released on 2021-04-19
  • Safari 16.4 Released on 2023-03-27
  • Safari on iOS 16.4 Released on 2023-03-27

Usage (according to Chrome Platform Status)

~78.411% of page loads. More data at chromestatus.com.