[epgui]

That's been my experience as well... Any CSS issue that was not immediately obvious, in my experience, has always had more to do with insane markup and javascript than with css.

Just to give a fictitious example (inspired by real events)... I wouldn't really expect a Label react component to be made up of 26 nested html elements, 80% of which coming from third party libraries. Stuff like that can be hard to style, but that's just because there's inappropriate abstractions involved.