:focus-within CSS pseudo-class
- UNOFFThe :focus-within pseudo-class matches elements that either themselves match :focus or that have descendants which match :focus.
IE
- 5.5 - 10: Not supported
- 11: Not supported
Edge
- 12 - 18: Not supported
- 79 - 90: Supported
- 91: Supported
Firefox
- 2 - 51: Not supported
- 52 - 88: Supported
- 89: Supported
- 90 - 91: Supported
Chrome
- 4 - 58: Not supported
- 59: Disabled by default
- 60 - 90: Supported
- 91: Supported
- 92 - 94: Supported
Safari
- 3.1 - 10: Not supported
- 10.1 - 14: Supported
- 14.1: Supported
- 15 - TP: Supported
Opera
- 9 - 45: Not supported
- 46: Disabled by default
- 47 - 75: Supported
- 76: Supported
Safari on iOS
- 3.2 - 10.2: Not supported
- 10.3 - 14.4: Supported
- 14.5: Supported
Opera Mini
- all: Not supported
Android Browser
- 2.1 - 4.4.4: Not supported
- 91: Supported
Opera Mobile
- 10 - 12.1: Not supported
- 62: Supported
Chrome for Android
- 91: Supported
Firefox for Android
- 89: Supported
UC Browser for Android
- 12.12: Not supported
Samsung Internet
- 4 - 7.4: Not supported
- 8.2 - 13.0: Supported
- 14.0: Supported
QQ Browser
- 10.4: Supported
Baidu Browser
- 7.12: Support unknown
KaiOS Browser
- 2.5: Not supported
- Resources:
- ally.style.focusWithin Polyfill, part of ally.js
- JS Bin testcase
- Chromium issue #617371: Implement `:focus-within` pseudo-class from Selectors Level 4
- WebKit bug #140144: Add support for CSS4 `:focus-within` pseudo
- Mozilla bug #1176997: Add support for pseudo class `:focus-within`
- MDN Web Docs - :focus-within
- Microsoft Edge feature request on UserVoice
- The Future Generation of CSS Selectors: Level 4: Generalized Input Focus Pseudo-class