ui-serif, ui-sans-serif, ui-monospace and ui-rounded values for font-family

- WD

Allows more control when choosing system interface fonts

Chrome

  1. 4 - 135: Not supported
  2. 136: Not supported
  3. 137 - 139: Not supported

Edge

  1. 12 - 135: Not supported
  2. 136: Not supported

Safari

  1. 3.1 - 13: Not supported
  2. 13.1 - 18.4: Supported
  3. 18.5: Supported
  4. TP: Supported

Firefox

  1. 2 - 137: Not supported
  2. 138: Not supported
  3. 139 - 141: Not supported

Opera

  1. 9 - 116: Not supported
  2. 117: Not supported

IE

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

Chrome for Android

  1. 136: Not supported

Safari on iOS

  1. 3.2 - 13.3: Not supported
  2. 13.4 - 18.4: Supported
  3. 18.5: Supported

Samsung Internet

  1. 4 - 26: Not supported
  2. 27: 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. 136: Not supported

Firefox for Android

  1. 137: 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:
Chromium support bug
ui-serif Firefox support bug
ui-sans-serif Firefox support bug
ui-monospace Firefox support bug
ui-rounded Firefox support bug
WebKit Safari 13.1 announcement