CSS Anchor Positioning

- WD

Allows placing elements anywhere on the page relative to an "anchor element", without regard to the layout of other elements besides their containing block

Chrome

  1. 4 - 116: Not supported
  2. 117 - 124: Disabled by default
  3. 125 - 130: Supported
  4. 131: Supported
  5. 132 - 134: Supported

Edge

  1. 12 - 116: Not supported
  2. 117 - 124: Disabled by default
  3. 125 - 130: Supported
  4. 131: Supported

Safari

  1. 3.1 - 18.0: Not supported
  2. 18.1: Not supported
  3. 18.2 - TP: Not supported

Firefox

  1. 2 - 131: Not supported
  2. 132: Not supported
  3. 133 - 135: Not supported

Opera

  1. 9 - 102: Not supported
  2. 103 - 110: Disabled by default
  3. 111 - 113: Supported
  4. 114: Supported

IE

  1. 5.5 - 10: Not supported
  2. 11: Not supported

Chrome for Android

  1. 131: Supported

Safari on iOS

  1. 3.2 - 18.0: Not supported
  2. 18.1: Not supported
  3. 18.2: Not supported

Samsung Internet

  1. 4 - 25: Not supported
  2. 26: Not supported

Opera Mini

  1. all: Not supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 80: Not supported

UC Browser for Android

  1. 15.5: Not supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 131: Supported

Firefox for Android

  1. 132: Not supported

QQ Browser

  1. 14.9: Not supported

Baidu Browser

  1. 13.52: Not supported

KaiOS Browser

  1. 2.5: Not supported
  2. 3: Not supported
Resources:
Blog post
Firefox support bug
Blog post on usage
Polyfill
WebKit position on Anchor Positioning