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CSS :read-only and :read-write selectors

- LS

:read-only and :read-write pseudo-classes to match elements which are considered user-alterable

Chrome

  1. 4 - 14: Support unknown
  2. 15 - 35: Partial support
  3. 36 - 123: Supported
  4. 124: Supported
  5. 125 - 127: Supported

Edge

  1. 12: Not supported
  2. 13 - 122: Supported
  3. 123: Supported

Safari

  1. 3.1 - 3.2: Support unknown
  2. 4 - 8: Partial support
  3. 9 - 17.3: Supported
  4. 17.4: Supported
  5. 17.5 - TP: Supported

Firefox

  1. 2: Support unknown
  2. 3 - 77: Supported
  3. 78 - 124: Supported
  4. 125: Supported
  5. 126 - 128: Supported

Opera

  1. 9 - 11.1: Support unknown
  2. 11.5 - 22: Partial support
  3. 23 - 108: Supported
  4. 109: Supported

IE

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

Chrome for Android

  1. 123: Supported

Safari on iOS

  1. 3.2 - 4.1: Support unknown
  2. 4.2 - 8.4: Partial support
  3. 9 - 17.3: Supported
  4. 17.4: Supported
  5. 17.5: Supported

Samsung Internet

  1. 4 - 23: Supported
  2. 24: Supported

Opera Mini

  1. all: Not supported

Opera Mobile

  1. 10 - 11.1: Not supported
  2. 11.5 - 12.1: Partial support
  3. 80: Supported

UC Browser for Android

  1. 15.5: Supported

Android Browser

  1. 2.1 - 2.2: Support unknown
  2. 2.3 - 4.4.4: Partial support
  3. 123: Supported

Firefox for Android

  1. 124: Supported

QQ Browser

  1. 14.9: Supported

Baidu Browser

  1. 13.52: Supported

KaiOS Browser

  1. 2.5: Supported
  2. 3: Supported
Resources:
Firefox feature request bug
CSS Tricks article
MDN :read-only
MDN Web Docs - CSS :read-write
Selectors Level 4 ยง The Mutability Pseudo-classes: :read-only and :read-write