Can I use
?

Scoped Styles: the @scope rule

- UNOFF

Allows CSS rules to be scoped to part of the document, with upper and lower limits described by selectors.

Chrome

  1. 4 - 103: Not supported
  2. 104 - 117: Disabled by default
  3. 118: Supported
  4. 119: Supported
  5. 120 - 122: Supported

Edge

  1. 12 - 103: Not supported
  2. 104 - 117: Disabled by default
  3. 118: Supported
  4. 119: Supported

Safari

  1. 3.1 - 17.0: Not supported
  2. 17.1: Not supported
  3. 17.2 - TP: Not supported

Firefox

  1. 2 - 119: Not supported
  2. 120: Not supported
  3. 121 - 123: Not supported

Opera

  1. 9 - 89: Not supported
  2. 90 - 103: Disabled by default
  3. 104: Disabled by default

IE

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

Chrome for Android

  1. 119: Supported

Safari on iOS

  1. 3.2 - 17.0: Not supported
  2. 17.1: Not supported
  3. 17.2: Not supported

Samsung Internet

  1. 4 - 22: Not supported
  2. 23: Not supported

Opera Mini

  1. all: Not supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 73: Not supported

UC Browser for Android

  1. 15.5: Not supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 119: Supported

Firefox for Android

  1. 119: Not supported

QQ Browser

  1. 13.1: Not supported

Baidu Browser

  1. 13.18: Not supported

KaiOS Browser

  1. 2.5: Not supported
  2. 3: Not supported

This implementation replaces an older concept of scoping CSS rules.

Resources:
Firefox support bug
Explainer
An introduction to @scope in CSS
WebKit position: support