Comment by Quekid5

It's getting better (in a C++ kinda way), certainly, but...

It's ultimately still driven my matching "random" identifiers (classes, ids, etc.) across semantic boundaries. Usually, the problem is that the result is mostly visual which makes it disproportionately hard to actually do tests for CSS and make sure you don't break random stuff if you change a tiny thing in your CSS.

For old farts like me: It's like the Aspect-Oriented Programming days of Java, but you can't really do meaningful tests. (Not that you could do 'negative' testing well in AOP, but even positive testing is annoyingly difficult with CSS.)

EDIT: Just to add. It's an actually difficult problem, but I consider the "separate presentation from content" idea a bit of a Windmill of sorts. There will always be interplay and an artificial separation will lead to ... awkward compromises and friction.