Intrinsic & Extrinsic Sizing

- WD

Allows for the heights and widths to be specified in intrinsic values using the max-content, min-content, fit-content and stretch (formerly fill) properties.

Chrome

  1. 4 - 21: Not supported
  2. 22 - 45: Supported
  3. 46 - 105: Supported
  4. 106: Supported
  5. 107 - 109: Supported

Edge

  1. 12 - 18: Not supported
  2. 79 - 105: Supported
  3. 106: Supported

Safari

  1. 3.1 - 6: Not supported
  2. 6.1 - 8: Partial support
  3. 9 - 10.1: Partial support
  4. 11 - 15.6: Partial support
  5. 16.0: Partial support
  6. 16.1 - TP: Partial support

Firefox

  1. 2: Not supported
  2. 3 - 65: Partial support
  3. 66 - 104: Partial support
  4. 105: Partial support
  5. 106 - 107: Partial support

Opera

  1. 9 - 12.1: Not supported
  2. 15 - 32: Supported
  3. 33: Supported
  4. 34: Supported
  5. 35 - 90: Supported
  6. 91: Supported

IE

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

Chrome for Android

  1. 106: Supported

Safari on iOS

  1. 3.2 - 6.1: Not supported
  2. 7 - 8.4: Partial support
  3. 9 - 13.7: Partial support
  4. 14 - 15.6: Partial support
  5. 16.0: Partial support
  6. 16.1: Partial support

Samsung Internet

  1. 4: Supported
  2. 5 - 17.0: Supported
  3. 18.0: Supported

Opera Mini

  1. all: Not supported

Opera Mobile

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

UC Browser for Android

  1. 13.4: Supported

Android Browser

  1. 2.1 - 4.3: Not supported
  2. 4.4 - 4.4.4: Supported
  3. 106: Supported

Firefox for Android

  1. 105: Partial support

QQ Browser

  1. 13.1: Supported

Baidu Browser

  1. 13.18: Supported

KaiOS Browser

  1. 2.5: Partial support

Prefixes are on the values, not the property names (e.g. -webkit-min-content)

Older webkit browsers also support the unofficial intrinsic value which acts the same as max-content.

Resources:
Min-Content tutorial