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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

IE

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

Edge

  1. 12: Not supported
  2. 13 - 89: Supported
  3. 90: Supported

Firefox

  1. 2: Support unknown
  2. 3 - 77: Supported
  3. 78 - 86: Supported
  4. 87: Supported
  5. 88 - 89: Supported

Chrome

  1. 4 - 14: Support unknown
  2. 15 - 35: Partial support
  3. 36 - 89: Supported
  4. 90: Supported
  5. 91 - 93: Supported

Safari

  1. 3.1 - 3.2: Support unknown
  2. 4 - 8: Partial support
  3. 9 - 13.1: Supported
  4. 14: Supported
  5. TP: Supported

Opera

  1. 9 - 11.1: Support unknown
  2. 11.5 - 22: Partial support
  3. 23 - 72: Supported
  4. 73: Supported

Safari on iOS

  1. 3.2 - 4.1: Support unknown
  2. 4.2 - 8.4: Partial support
  3. 9 - 13.7: Supported
  4. 14: Supported

Opera Mini

  1. all: Not supported

Android Browser

  1. 2.1 - 2.2: Support unknown
  2. 2.3 - 4.4.4: Partial support
  3. 89: Supported

Opera Mobile

  1. 10 - 11.1: Not supported
  2. 11.5 - 12.1: Partial support
  3. 62: Supported

Chrome for Android

  1. 89: Supported

Firefox for Android

  1. 86: Supported

UC Browser for Android

  1. 12.12: Supported

Samsung Internet

  1. 4 - 12.0: Supported
  2. 13.0: Supported

QQ Browser

  1. 10.4: Supported

Baidu Browser

  1. 7.12: Supported

KaiOS Browser

  1. 2.5: 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