Is there anybody here who is deeply in the frontend rabbithole and can recommend a JS free CSS framework that we can use for a project where readability & UX ma

Is there anybody here who is deeply in the frontend rabbithole and can recommend a JS free CSS framework that we can use for a project where readability & UX matters a lot? Somebody recommended material.io but is it not JS free. I was wondering if there is a JS free CSS framework that looks great.