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 - 134: Supported
  4. ✅ 135: Supported
  5. ✅ 136 - 138: Supported

Edge

  1. ❌ 12 - 18: Not supported
  2. ✅ 79 - 134: Supported
  3. ✅ 135: Supported

Safari

  1. ❌ 3.1 - 7: Not supported
  2. ✅ 7.1 - 10: Supported
  3. ✅ 10.1 - 18.3: Supported
  4. ✅ 18.4: Supported
  5. ✅ 18.5 - TP: Supported

Firefox

  1. ❌ 2 - 50: Not supported
  2. ❌ 51 - 61: Disabled by default
  3. ✅ 62 - 136: Supported
  4. ✅ 137: Supported
  5. ✅ 138 - 140: Supported

Opera

  1. ❌ 9 - 23: Not supported
  2. ✅ 24 - 116: Supported
  3. ✅ 117: Supported

IE

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

Chrome for Android

  1. ✅ 135: Supported

Safari on iOS

  1. ❌ 3.2 - 7.1: Not supported
  2. ✅ 8 - 10.2: Supported
  3. ✅ 10.3 - 18.3: Supported
  4. ✅ 18.4: Supported
  5. ✅ 18.5: Supported

Samsung Internet

  1. ✅ 4 - 26: Supported
  2. ✅ 27: Supported

Opera Mini

  1. ❌ all: Not 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 - 4.4.4: Not supported
  2. ✅ 135: Supported

Firefox for Android

  1. ✅ 137: Supported

QQ Browser

  1. ✅ 14.9: Supported

Baidu Browser

  1. ✅ 13.52: Supported

KaiOS Browser

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