Can I use
?

CSS Shapes Level 1

- CR

Allows geometric shapes to be set in CSS to define an area for text to flow around. Includes properties shape-outside, shape-margin and shape-image-threshold

Chrome

  1. 4 - 33: Not supported
  2. 34 - 36: Disabled by default
  3. 37 - 118: Supported
  4. 119: Supported
  5. 120 - 122: Supported

Edge

  1. 12 - 18: Not supported
  2. 79 - 118: Supported
  3. 119: Supported

Safari

  1. 3.1 - 7: Not supported
  2. 7.1 - 10: Supported
  3. 10.1 - 17.0: Supported
  4. 17.1: Supported
  5. 17.2 - TP: Supported

Firefox

  1. 2 - 50: Not supported
  2. 51 - 61: Disabled by default
  3. 62 - 119: Supported
  4. 120: Supported
  5. 121 - 123: Supported

Opera

  1. 9 - 23: Not supported
  2. 24 - 103: Supported
  3. 104: Supported

IE

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

Chrome for Android

  1. 119: Supported

Safari on iOS

  1. 3.2 - 7.1: Not supported
  2. 8 - 10.2: Supported
  3. 10.3 - 17.0: Supported
  4. 17.1: Supported
  5. 17.2: Supported

Samsung Internet

  1. 4 - 22: Supported
  2. 23: Supported

Opera Mini

  1. all: Not supported

Opera Mobile

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

UC Browser for Android

  1. 15.5: Supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 119: Supported

Firefox for Android

  1. 119: Supported

QQ Browser

  1. 13.1: Supported

Baidu Browser

  1. 13.18: Supported

KaiOS Browser

  1. 2.5: Not supported
  2. 3: Supported
Resources:
A List Apart article
Firefox tracking bug