CSS overflow: overlay

- UNOFF

The overlay value of the overflow CSS property is a non-standard value to make scrollbars appear on top of content rather than take up space. This value is deprecated and related functionality being standardized as the scrollbar-gutter property.

Chrome

  1. 4 - 14: Support unknown
  2. 15 - 113: Supported
  3. 114 - 130: Not supported
  4. 131: Not supported
  5. 132 - 134: Not supported

Edge

  1. 12 - 18: Not supported
  2. 79 - 113: Supported
  3. 114 - 130: Not supported
  4. 131: Not supported

Safari

  1. 3.1 - 3.2: Support unknown
  2. 4 - 11.1: Supported
  3. 12 - 18.0: Not supported
  4. 18.1: Not supported
  5. 18.2 - TP: Not supported

Firefox

  1. 2 - 131: Not supported
  2. 132: Not supported
  3. 133 - 135: Not supported

Opera

  1. 9 - 12.1: Not supported
  2. 15 - 99: Supported
  3. 100 - 113: Not supported
  4. 114: Not supported

IE

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

Chrome for Android

  1. 131: Not supported

Safari on iOS

  1. 3.2: Support unknown
  2. 4 - 11.4: Supported
  3. 12 - 18.0: Not supported
  4. 18.1: Not supported
  5. 18.2: Not supported

Samsung Internet

  1. 4 - 25: Supported
  2. 26: 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: Supported
  2. 131: Not supported

Firefox for Android

  1. 132: Not supported

QQ Browser

  1. 14.9: Supported

Baidu Browser

  1. 13.52: Supported

KaiOS Browser

  1. 2.5: Not supported
  2. 3: Not supported
Resources:
MDN article on overflow values
WebKit change to make "overflow: overlay" a synonym for "overflow: auto"