Comment by vaylian

> I've never seen a complex website redesign that didn't involve almost gutting the HTML either. CSS isn't powerful enough alone

I recognize your experience. But I would also like to argue that good semantic CSS class names require active development effort. If you inherit a code base where no one has done the work of properly assigning semantic CSS names to tags, then you can't update the external stylesheet without touching the HTML.

https://csszengarden.com/ shows how a clean separation between HTML and CSS can be achieved. This is obviously a simple web site and there is not much cruft that accumulated over the years. But the principles behind it are scalable when people take the separation of content and representation seriously.