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Reversed attribute of ordered lists

- LS

This attribute makes an ordered list number its items in descending order (large to small), instead of ascending order (small to large; the default). The order that the list items are displayed in is not affected.

Chrome

  1. 4 - 15: Not supported
  2. 16 - 19: Support unknown
  3. 20 - 113: Supported
  4. 114: Supported
  5. 115 - 117: Supported

Edge

  1. 12 - 18: Not supported
  2. 79 - 113: Supported
  3. 114: Supported

Safari

  1. 3.1 - 5.1: Not supported
  2. 6: Support unknown
  3. 6.1 - 16.4: Supported
  4. 16.5: Supported
  5. 16.6 - TP: Supported

Firefox

  1. 2 - 17: Not supported
  2. 18 - 112: Supported
  3. 113: Supported
  4. 114 - 115: Supported

Opera

  1. 9 - 11.6: Not supported
  2. 12: Support unknown
  3. 12.1 - 98: Supported
  4. 99: Supported

IE

  1. 5.5 - 10: Not supported
  2. 11: Not supported

Chrome for Android

  1. 114: Supported

Safari on iOS

  1. 3.2 - 5.1: Not supported
  2. 6 - 16.4: Supported
  3. 16.5: Supported
  4. 16.6 - 17: Supported

Samsung Internet

  1. 4 - 20: Supported
  2. 21: Supported

Opera Mini

  1. all: Supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 73: Supported

UC Browser for Android

  1. 13.4: Supported

Android Browser

  1. 2.1 - 4.3: Not supported
  2. 4.4 - 4.4.4: Supported
  3. 114: Supported

Firefox for Android

  1. 113: Supported

QQ Browser

  1. 13.1: Supported

Baidu Browser

  1. 13.18: Supported

KaiOS Browser

  1. 2.5: Supported
  2. 3: Supported
Resources:
HTML5 Doctor article on <ol> element attributes (including reversed)