A few sirens went off a couple of weeks ago when the CSS Working Group (CSSWG) resolved to add an if() conditional to the CSS Values Module Level 5 specification. It was Lea Verou’s X post that same day that caught my attention: A historical day for CSS 😀🎉 If you write any components used and/or styled by others, you know how huge this is! background: if(style(–variant: success), var(–green)); E