display: run-in
- WDIf the run-in box contains a block box, same as block. If a block box follows the run-in box, the run-in box becomes the first inline box of the block box. If an inline box follows, the run-in box becomes a block box.
IE
- 5.5 - 7: Not supported
- 8 - 10: Supported
- 11: Supported
Edge
- 12 - 89: Not supported
- 90: Not supported
Firefox
- 2 - 86: Not supported
- 87: Not supported
- 88 - 89: Not supported
Chrome
- 4 - 31: Supported
- 32 - 89: Not supported
- 90: Not supported
- 91 - 93: Not supported
Safari
- 3.1 - 4: Supported
- 5 - 6: Supported
- 6.1: Support unknown
- 7 - 13.1: Not supported
- 14: Not supported
- TP: Not supported
Opera
- 9 - 18: Supported
- 19 - 72: Not supported
- 73: Not supported
Safari on iOS
- 3.2: Supported
- 4 - 7.1: Supported
- 8 - 13.7: Not supported
- 14: Not supported
Opera Mini
- all: Supported
Android Browser
- 2.1 - 4.4: Supported
- 4.4.3: Not supported
- 89: Not supported
Opera Mobile
- 10 - 12.1: Supported
- 62: Not supported
Chrome for Android
- 89: Not supported
Firefox for Android
- 86: Not supported
UC Browser for Android
- 12.12: Not supported
Samsung Internet
- 4 - 12.0: Not supported
- 13.0: Not supported
QQ Browser
- 10.4: Not supported
Baidu Browser
- 7.12: Not supported
KaiOS Browser
- 2.5: Not supported
- Resources:
- Mozilla bug report
- CSS Tricks article