CSS Device Adaptation
- WDMethod 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
- 5.5 - 9: Not supported
- 10: Partial support
- 11: Partial support
Edge
- 12 - 18: Partial support
- 79 - 100: Disabled by default
- 101: Disabled by default
Firefox
- 2 - 99: Not supported
- 100: Not supported
- 101 - 102: Not supported
Chrome
- 4 - 28: Not supported
- 29 - 100: Disabled by default
- 101: Disabled by default
- 102 - 104: Disabled by default
Safari
- 3.1 - 15.3: Not supported
- 15.4: Not supported
- TP: Not supported
Opera
- 9 - 39: Not supported
- 40 - 85: Disabled by default
- 86: Disabled by default
- 87: Disabled by default
Safari on iOS
- 3.2 - 15.3: Not supported
- 15.4: Not supported
Opera Mini
- all: Partial support
Android Browser
- 2.1 - 4.4.4: Not supported
- 101: Not supported
Opera Mobile
- 10: Not supported
- 11 - 12.1: Partial support
- 64: Not supported
Chrome for Android
- 101: Not supported
Firefox for Android
- 100: Not supported
UC Browser for Android
- 12.12: Not supported
Samsung Internet
- 4 - 15.0: Not supported
- 16.0: Not supported
QQ Browser
- 10.4: Disabled by default
Baidu Browser
- 7.12: Not supported
KaiOS Browser
- 2.5: Not supported
Due to lack of implementation this specification is slated to be retired.