html is not created to “style” things, it is simply to “layout things”, I think what you are looking for is something similar to css, a combination of html + css, for this, there are libraries like Roact, Fusion, which are quite similar to that.
Fusion: Fusion
Roact: Roact: The Ultimate UI Framework
Extra: I’m not sure if something like html is possible to be created in luau, even if it was, I see it a bit useless / impractical.