Support @counter-style #770
Description
Hi!
CSSLint doesn't support @counter-style. It is considered a Parsing Error. As far as I can see, it's not even possible to ignore it using /* csslint ignore:start */, although I might be wrong about this.
@counter-style is part of standard CSS. As of September 2020, it's not supported in WebKit (bug), but it does work in Gecko.
What is CSSLint's policy about such cases? Can it maybe show a compatibility warning instead of being a total parsing error?