Given my thoughts (and recent experience) was shaped by something like Elm-UI - see: https://www.youtube.com/watch?v=Ie-gqwSHQr0
If you have the time to learn CSS, you have the time to learn anything else. ;)
If you have the time to learn CSS, you have the time to learn anything else. ;)
Part of the problem with CSS is that we seem to relegate it to something we don't need to learn. "Well, it's just CSS. I'm a developer!" And then we complain when we don't understand it or when our jerry-built sequence of StackOverflow copy-and-pastes is a clusterfuck to deal with.
I myself realized I was working off knowledge I read in a CSS book I read in 2004, so I committed a week of updating my knowledge on my own. I realized very few people actually do that, as I'd easily gone 15 years without doing it, and even with my 2004-level knowledge of CSS I'd always be amazed when a fellow 30-yo web developer didn't know how you can offset absolutely-positioned children inside a relative-positioned parent or something just as entry level. Just like, until recently, I'd probably amaze someone that I didn't know what the rem, vh, and vw units were.
Edit: of course it's worthwhile to learn enough CSS to understand more or less what it does since it's so pervasive. I mean that using it as the main way to lay out pages is a frustrating experience in many cases.