English is not superior to all other languages. It's just pervasive, enough so that many propgramming languages have English constructs built into them. If we're designing a system that uses natural language as a programming language, English is optimal since it's the most familiar.
CSS is amazing, but the HTML DOM isn't. It's just so heavy. Maybe if JSON or some similar format could replace HTML/XML, it could be made lighter? Better, I think, would be to use a human readable format like Eno . It's as terse but much easier to read than JSON.