Can I use
?

CSS Backdrop Filter

- UNOFF

Method of applying filter effects (like blur, grayscale or hue) to content/elements below the target element.

IE

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

Edge

  1. 12 - 16: Not supported
  2. 17 - 18: Supported
  3. 79 - 96: Supported
  4. 97: Supported

Firefox

  1. 2 - 69: Not supported
  2. 70 - 95: Disabled by default
  3. 96: Disabled by default
  4. 97 - 98: Disabled by default

Chrome

  1. 4 - 46: Not supported
  2. 47 - 75: Disabled by default
  3. 76 - 96: Supported
  4. 97: Supported
  5. 98 - 100: Supported

Safari

  1. 3.1 - 8: Not supported
  2. 9 - 15.1: Supported
  3. 15.2: Supported
  4. TP: Supported

Opera

  1. 9 - 33: Not supported
  2. 34 - 63: Disabled by default
  3. 64 - 81: Supported
  4. 82: Supported

Safari on iOS

  1. 3.2 - 8.4: Not supported
  2. 9 - 15.1: Supported
  3. 15.2: Supported

Opera Mini

  1. all: Not supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 97: Supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 64: Supported

Chrome for Android

  1. 97: Supported

Firefox for Android

  1. 95: Disabled by default

UC Browser for Android

  1. 12.12: Not supported

Samsung Internet

  1. 4: Not supported
  2. 5 - 11.2: Disabled by default
  3. 12.0 - 14.0: Supported
  4. 15.0: Supported

QQ Browser

  1. 10.4: Disabled by default

Baidu Browser

  1. 7.12: Disabled by default

KaiOS Browser

  1. 2.5: Not supported
Resources:
Blog post
WebKit bug to unprefix `-webkit-backdrop-filter`
MDN Web Docs - CSS backdrop filter
Edge feature request