CSS selector: `:where()`

IE

  1. 6 - 10: Not supported
  2. 11: Not supported

Edge

  1. 12 - 86: Not supported
  2. 87: Not supported

Firefox

  1. 2 - 76: Not supported
  2. 77: Disabled by default
  3. 78 - 83: Supported
  4. 84: Supported
  5. 85 - 86: Supported

Chrome

  1. 4 - 71: Not supported
  2. 72 - 86: Disabled by default
  3. 87: Disabled by default
  4. 88 - 90: Disabled by default

Safari

  1. 3.1 - 13.1: Not supported
  2. 14: Supported
  3. TP: Supported

Opera

  1. 10 - 71: Not supported
  2. 72: Not supported

iOS Safari

  1. 3.2 - 13.7: Not supported
  2. 14: Supported

Opera Mini

  1. all: Support unknown

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 81: Not supported

Opera Mobile

  1. 12 - 12.1: Not supported
  2. 59: Not supported

Chrome for Android

  1. 87: Disabled by default

Firefox for Android

  1. 83: Supported

UC Browser for Android

  1. 12.12: Support unknown

Samsung Internet

  1. 4 - 12.0: Not supported
  2. 13.0: Not supported

QQ Browser

  1. 10.4: Support unknown

Baidu Browser

  1. 7.12: Support unknown

KaiOS Browser

  1. 2.5: Support unknown