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.

Chrome

  1. 4 - 28: Not supported
  2. 29 - 121: Disabled by default
  3. 122: Disabled by default
  4. 123 - 125: Disabled by default

Edge

  1. 12 - 18: Partial support
  2. 79 - 120: Disabled by default
  3. 121: Disabled by default

Safari

  1. 3.1 - 17.2: Not supported
  2. 17.3: Not supported
  3. 17.4 - TP: Not supported

Firefox

  1. 2 - 122: Not supported
  2. 123: Not supported
  3. 124 - 126: Not supported

Opera

  1. 9 - 39: Not supported
  2. 40 - 105: Disabled by default
  3. 106: Disabled by default

IE

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

Chrome for Android

  1. 121: Not supported

Safari on iOS

  1. 3.2 - 17.2: Not supported
  2. 17.3: Not supported
  3. 17.4: Not supported

Samsung Internet

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

Opera Mini

  1. all: Partial support

Opera Mobile

  1. 10: Not supported
  2. 11 - 12.1: Partial support
  3. 73: Not supported

UC Browser for Android

  1. 15.5: Not supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 121: Not supported

Firefox for Android

  1. 122: Not supported

QQ Browser

  1. 13.1: Disabled by default

Baidu Browser

  1. 13.18: Not supported

KaiOS Browser

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

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

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