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.

IE

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

Edge

  1. 12 - 18: Not supported
  2. 79 - 88: Supported
  3. 89: Supported

Firefox

  1. 2 - 86: Not supported
  2. 87: Not supported
  3. 88 - 89: Not supported

Chrome

  1. 4 - 14: Support unknown
  2. 15 - 88: Supported
  3. 89: Supported
  4. 90 - 92: Supported

Safari

  1. 3.1 - 3.2: Support unknown
  2. 4 - 11.1: Supported
  3. 12 - 13.1: Not supported
  4. 14: Not supported
  5. TP: Not supported

Opera

  1. 9 - 12.1: Not supported
  2. 15 - 72: Supported
  3. 73: Supported

Safari on iOS

  1. 3.2: Support unknown
  2. 4 - 11.4: Supported
  3. 12 - 13.7: Not supported
  4. 14: Not supported

Opera Mini

  1. all: Not supported

Android Browser

  1. 2.1 - 4.4.4: Supported
  2. 89: Supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 62: Supported

Chrome for Android

  1. 89: Supported

Firefox for Android

  1. 86: Not supported

UC Browser for Android

  1. 12.12: Supported

Samsung Internet

  1. 4 - 12.0: Supported
  2. 13.0: Supported

QQ Browser

  1. 10.4: Supported

Baidu Browser

  1. 7.12: Supported

KaiOS Browser

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