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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 - 123: Supported
  4. 124: Supported
  5. 125 - 127: Supported

Edge

  1. 12 - 18: Not supported
  2. 79 - 122: Supported
  3. 123: Supported

Safari

  1. 3.1 - 5.1: Not supported
  2. 6: Support unknown
  3. 6.1 - 17.3: Supported
  4. 17.4: Supported
  5. 17.5 - TP: Supported

Firefox

  1. 2 - 17: Not supported
  2. 18 - 124: Supported
  3. 125: Supported
  4. 126 - 128: Supported

Opera

  1. 9 - 11.6: Not supported
  2. 12: Support unknown
  3. 12.1 - 108: Supported
  4. 109: Supported

IE

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

Chrome for Android

  1. 123: Supported

Safari on iOS

  1. 3.2 - 5.1: Not supported
  2. 6 - 17.3: Supported
  3. 17.4: Supported
  4. 17.5: Supported

Samsung Internet

  1. 4 - 23: Supported
  2. 24: Supported

Opera Mini

  1. all: Supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 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. 123: Supported

Firefox for Android

  1. 124: Supported

QQ Browser

  1. 14.9: Supported

Baidu Browser

  1. 13.52: Supported

KaiOS Browser

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