CSS Regions

- WD

Method of flowing content into multiple elements, allowing magazine-like layouts. While once supported in WebKit-based browsers and Internet Explorer, implementing the feature is no longer being pursued by any browser.

Chrome

  1. 4 - 14: Not supported
  2. 15 - 18: Partial support
  3. 19 - 34: Disabled by default
  4. 35 - 105: Not supported
  5. 106: Not supported
  6. 107 - 109: Not supported

Edge

  1. 12 - 18: Partial support
  2. 79 - 104: Not supported
  3. 105: Not supported

Safari

  1. 3.1 - 6: Not supported
  2. 6.1 - 11: Supported
  3. 11.1 - 15.6: Not supported
  4. 16.0: Not supported
  5. 16.1 - TP: Not supported

Firefox

  1. 2 - 104: Not supported
  2. 105: Not supported
  3. 106 - 107: Not supported

Opera

  1. 9 - 90: Not supported
  2. 91: Not supported

IE

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

Chrome for Android

  1. 105: Not supported

Safari on iOS

  1. 3.2 - 6.1: Not supported
  2. 7 - 11.2: Supported
  3. 11.3 - 15.6: Not supported
  4. 16.0: Not supported
  5. 16.1: Not supported

Samsung Internet

  1. 4 - 17.0: Not supported
  2. 18.0: Not supported

Opera Mini

  1. all: Not supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 64: Not supported

UC Browser for Android

  1. 13.4: Not supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 105: Not supported

Firefox for Android

  1. 104: Not supported

QQ Browser

  1. 13.1: Not supported

Baidu Browser

  1. 13.18: Not supported

KaiOS Browser

  1. 2.5: Not supported
Resources:
Firefox feature request bug
Discussion on removal in Blink
IE10 developer guide info
Adobe demos and samples
Beginner's guide to CSS Regions