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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 - 130: Not supported
  5. ❌ 131: Not supported
  6. ❌ 132 - 134: Not supported

Edge

  1. ◐ 12 - 18: Partial support
  2. ❌ 79 - 130: Not supported
  3. ❌ 131: Not supported

Safari

  1. ❌ 3.1 - 6: Not supported
  2. ✅ 6.1 - 11: Supported
  3. ❌ 11.1 - 18.0: Not supported
  4. ❌ 18.1: Not supported
  5. ❌ 18.2 - TP: Not supported

Firefox

  1. ❌ 2 - 131: Not supported
  2. ❌ 132: Not supported
  3. ❌ 133 - 135: Not supported

Opera

  1. ❌ 9 - 113: Not supported
  2. ❌ 114: Not supported

IE

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

Chrome for Android

  1. ❌ 131: Not supported

Safari on iOS

  1. ❌ 3.2 - 6.1: Not supported
  2. ✅ 7 - 11.2: Supported
  3. ❌ 11.3 - 18.0: Not supported
  4. ❌ 18.1: Not supported
  5. ❌ 18.2: Not supported

Samsung Internet

  1. ❌ 4 - 25: Not supported
  2. ❌ 26: Not supported

Opera Mini

  1. ❌ all: Not supported

Opera Mobile

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

UC Browser for Android

  1. ❌ 15.5: Not supported

Android Browser

  1. ❌ 2.1 - 4.4.4: Not supported
  2. ❌ 131: Not supported

Firefox for Android

  1. ❌ 132: Not supported

QQ Browser

  1. ❌ 14.9: Not supported

Baidu Browser

  1. ❌ 13.52: Not supported

KaiOS Browser

  1. ❌ 2.5: Not supported
  2. ❌ 3: 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