That depends very much on the type of developer.
Personally, I would first try to get the semantic structure of HTML right for the content I want to display. Then I would look at what I can do in CSS to make it look nice, but without going full overboard. Stick to things that are now standard in browsers, and that are responsive and resize and float nicely. Perhaps, if necessary even something like the checkbox hack, but probably try to avoid it, since it is a hack. Then the site already looks sufficiently good usually. At no point in this comes JavaScript into play, because this is about visuals, and that should be handled by HTML and CSS. I will use JS, when I have something dynamically changing and/or interactive on a page, and I will try to make a noscript alternative, perhaps usable by the user simply reloading the page.
However, I have also seen a lot of frontend devs, who just throw JS framework at everything and since everything is JS anyway, they also do things that could be simple HTML and CSS using JS instead. The result are those pages, where one is greeted by a blank white page, when not running JS.
So there definitely are a lot of devs, mostly frontend devs, that do this kinda thing, and it often secures their job by introducing complexity under the guise of looking fancy.
Example from a previous job: Making buttons that have 2 corners cut off, but the main navigation bugs regarding responsiveness, that led to broken layout took 3 months to fix. Transferring a navigation from one project to another? 3 weeks.
