Once upon a time, whenever I interview developers, most of them proudly announced their expertise in jQuery. I have to bring them down to the basics and ask them about JavaScript. Almost all of them were lost. I asked them, if not for this, but to learn JavaScript and all the other framework will that; a framework on top of JavaScript which one can just use (perhaps take a week or so ro learn).

The same goes for CSS. Everyone bolded, and highlighted their experience with Bootstrap but missed the CSS. I did used Bootstrap, Foundation, Skeleton, Bourbon, and many others, especially when working with the team, so we all can speak the same language. This is true for Tailwind too. I remember when Tailwind was still in alpha and I realized that was the perfect tool to bring the team together and move fast. I was able to use it both as a utility and like most other people as the HTML polluter (but it worked).

If one is keen, it is always a good idea to learn the core - HTML, CSS, JavaScript; all the frameworks that wraps them should just be syntactic sugar. Bootstrap came and went, so will Tailwind.

PS. With AI/LLM Coding Assist, writing in plain CSS is becoming beautiful again. I can outline what I want, give it a checklist and make it do the strenuous part of writing them. I don’t even have to remember the cascades.