[csswg-drafts] Pull Request: [css-conditional] Define @supports selector function.

emilio has just submitted a new pull request for https://github.com/w3c/csswg-drafts:

== [css-conditional] Define @supports selector function. ==
Depends on #3773.

Closes #3207.

See https://github.com/w3c/csswg-drafts/pull/3774

Received on Thursday, 28 March 2019 16:28:35 UTC