CSS Device Adaptation

- WD

Method of overriding the size of viewport in web page using the @viewport rule, replacing Apple's own popular <meta> viewport implementation. Includes the extend-to-zoom width value.

IE

  1. 5.5 - 9: Not supported
  2. 10: Partial support
  3. 11: Partial support

Edge

  1. 12 - 18: Partial support
  2. 79 - 100: Disabled by default
  3. 101: Disabled by default

Firefox

  1. 2 - 99: Not supported
  2. 100: Not supported
  3. 101 - 102: Not supported

Chrome

  1. 4 - 28: Not supported
  2. 29 - 100: Disabled by default
  3. 101: Disabled by default
  4. 102 - 104: Disabled by default

Safari

  1. 3.1 - 15.3: Not supported
  2. 15.4: Not supported
  3. TP: Not supported

Opera

  1. 9 - 39: Not supported
  2. 40 - 85: Disabled by default
  3. 86: Disabled by default
  4. 87: Disabled by default

Safari on iOS

  1. 3.2 - 15.3: Not supported
  2. 15.4: Not supported

Opera Mini

  1. all: Partial support

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 101: Not supported

Opera Mobile

  1. 10: Not supported
  2. 11 - 12.1: Partial support
  3. 64: Not supported

Chrome for Android

  1. 101: Not supported

Firefox for Android

  1. 100: Not supported

UC Browser for Android

  1. 12.12: Not supported

Samsung Internet

  1. 4 - 15.0: Not supported
  2. 16.0: Not supported

QQ Browser

  1. 10.4: Disabled by default

Baidu Browser

  1. 7.12: Not supported

KaiOS Browser

  1. 2.5: Not supported

Due to lack of implementation this specification is slated to be retired.

Resources:
Device adaptation in Internet Explorer 10
WebKit tracking bug
Mozilla tracking bug
Chrome tracking bug
Introduction to meta viewport and @viewport in Opera Mobile