Can I use
?

CSS ::marker pseudo-element

- WD

The ::marker pseudo-element allows list item markers to be styled or have their content value customized.

IE

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

Edge

  1. 12 - 85: Not supported
  2. 86: Supported
  3. 87: Supported

Firefox

  1. 2 - 67: Not supported
  2. 68 - 83: Supported
  3. 84: Supported
  4. 85 - 86: Supported

Chrome

  1. 4 - 85: Not supported
  2. 86: Supported
  3. 87: Supported
  4. 88 - 90: Supported

Safari

  1. 3.1 - 11: Not supported
  2. 11.1 - 13.1: Supported
  3. 14: Supported
  4. TP: Supported

Opera

  1. 9 - 71: Not supported
  2. 72: Supported

iOS Safari

  1. 3.2 - 11.2: Not supported
  2. 11.3 - 13.7: Supported
  3. 14: Supported

Opera Mini

  1. all: Not supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 81: Supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 59: Not supported

Chrome for Android

  1. 87: Supported

Firefox for Android

  1. 83: Supported

UC Browser for Android

  1. 12.12: Not supported

Samsung Internet

  1. 4 - 12.0: Not supported
  2. 13.0: Not supported

QQ Browser

  1. 10.4: Not supported

Baidu Browser

  1. 7.12: Not supported

KaiOS Browser

  1. 2.5: Not supported
Resources:
Chrome support bug
WebKit support bug
Firefox support bug
CSS-Tricks article
MDN Web Docs - CSS ::marker
Edge UserVoice request