CSS selector: `:is()`

IE

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

Edge

  1. 12 - 18: Not supported
  2. 79 - 89: Disabled by default
  3. 90: Disabled by default

Firefox

  1. 2 - 3.6: Not supported
  2. 4 - 76: Partial support
  3. 77: Disabled by default
  4. 78 - 87: Supported
  5. 88: Supported
  6. 89 - 90: Supported

Chrome

  1. 4 - 11: Not supported
  2. 12 - 67: Partial support
  3. 68 - 87: Disabled by default
  4. 88 - 89: Supported
  5. 90: Supported
  6. 91 - 93: Supported

Safari

  1. 3.1 - 4: Not supported
  2. 5 - 8: Partial support
  3. 9 - 13.1: Partial support
  4. 14: Supported
  5. 14.1: Supported
  6. TP: Supported

Opera

  1. 10 - 12.1: Not supported
  2. 15 - 54: Partial support
  3. 55 - 74: Disabled by default
  4. 75: Disabled by default

Safari on iOS

  1. 3.2 - 4.3: Not supported
  2. 5 - 8.4: Partial support
  3. 9 - 13.7: Partial support
  4. 14: Supported
  5. 14.5: Supported

Opera Mini

  1. all: Support unknown

Android Browser

  1. 2.1 - 4.4.4: Support unknown
  2. 90: Supported

Opera Mobile

  1. 12 - 12.1: Not supported
  2. 62: Disabled by default

Chrome for Android

  1. 90: Supported

Firefox for Android

  1. 87: Partial support

UC Browser for Android

  1. 12.12: Support unknown

Samsung Internet

  1. 4 - 8.2: Partial support
  2. 9.2: Partial support
  3. 10.1 - 13.0: Partial support
  4. 14.0: Partial support

QQ Browser

  1. 10.4: Support unknown

Baidu Browser

  1. 7.12: Support unknown

KaiOS Browser

  1. 2.5: Support unknown