CSS Containment

- REC

The CSS contain property lets developers limit the scope of the browser's styles, layout and paint work for faster and more efficient rendering.

Chrome

  1. 4 - 50: Not supported
  2. 51: Disabled by default
  3. 52 - 124: Supported
  4. 125: Supported
  5. 126 - 128: Supported

Edge

  1. 12 - 18: Not supported
  2. 79 - 124: Supported
  3. 125: Supported

Safari

  1. 3.1 - 15.3: Not supported
  2. 15.4 - 17.4: Supported
  3. 17.5: Supported
  4. 17.6 - TP: Supported

Firefox

  1. 2 - 40: Not supported
  2. 41 - 68: Disabled by default
  3. 69 - 125: Supported
  4. 126: Supported
  5. 127 - 129: Supported

Opera

  1. 9 - 37: Not supported
  2. 38 - 39: Disabled by default
  3. 40 - 108: Supported
  4. 109: Supported

IE

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

Chrome for Android

  1. 124: Supported

Safari on iOS

  1. 3.2 - 15.3: Not supported
  2. 15.4 - 17.4: Supported
  3. 17.5: Supported
  4. 17.6: Supported

Samsung Internet

  1. 4 - 5.4: Not supported
  2. 6.2 - 23: Supported
  3. 24: Supported

Opera Mini

  1. all: Not supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 80: Supported

UC Browser for Android

  1. 15.5: Supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 124: Supported

Firefox for Android

  1. 125: Supported

QQ Browser

  1. 14.9: Supported

Baidu Browser

  1. 13.52: Supported

KaiOS Browser

  1. 2.5: Disabled by default
  2. 3: Supported
Resources:
Google Developers article