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CSS widows & orphans

- REC

CSS properties to control when lines break across pages or columns by defining the amount of lines that must be left before or after the break.

Chrome

  1. ❌ 4 - 24: Not supported
  2. ✅ 25 - 136: Supported
  3. ✅ 137: Supported
  4. ✅ 138 - 140: Supported

Edge

  1. ✅ 12 - 136: Supported
  2. ✅ 137: Supported

Safari

  1. ❌ 3.1 - 6.1: Not supported
  2. ✅ 7 - 18.4: Supported
  3. ✅ 18.5: Supported
  4. ✅ 26.0 - TP: Supported

Firefox

  1. ❌ 2 - 138: Not supported
  2. ❌ 139: Not supported
  3. ❌ 140 - 142: Not supported

Opera

  1. ✅ 9 - 11.6: Supported
  2. ✅ 12 - 116: Supported
  3. ✅ 117: Supported

IE

  1. ❌ 5.5 - 7: Not supported
  2. ✅ 8 - 9: Supported
  3. ✅ 10: Supported
  4. ✅ 11: Supported

Chrome for Android

  1. ✅ 137: Supported

Safari on iOS

  1. ❌ 3.2 - 6.1: Not supported
  2. ✅ 7 - 18.4: Supported
  3. ✅ 18.5: Supported
  4. ✅ 26.0: Supported

Samsung Internet

  1. ✅ 4 - 27: Supported
  2. ✅ 28: Supported

Opera Mini

  1. ✅ all: Supported

Opera Mobile

  1. ❌ 10 - 12: Not supported
  2. ✅ 12.1: Supported
  3. ✅ 80: Supported

UC Browser for Android

  1. ✅ 15.5: Supported

Android Browser

  1. ❌ 2.1 - 4.3: Not supported
  2. ✅ 4.4 - 4.4.4: Supported
  3. ✅ 137: Supported

Firefox for Android

  1. ❌ 139: Not supported

QQ Browser

  1. ✅ 14.9: Supported

Baidu Browser

  1. ✅ 13.52: Supported

KaiOS Browser

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

Some older WebKit-based browsers recognize the properties, but do not appear to have actual support

Resources:
Firefox support bug
CSS last-line: Controlling Widows & Orphans
codrops article on orphans
codrops article on widows