If you've worked in ops, configuration files are a lot like HTML/css. This declarative, static markup. React abstracts HTML away almost entirely by kind of subsuming it. For CSS google/chatgpt is your friend. In either case, google/chatgpt is your friend.

For CSS, we use bootstrap but a lot of folks use tailwind. There are millions of flavors of these CSS libraries that do a lot of the boilerplate stuff.