I think "responsive" is a useful modifier (even though most CSS frameworks nowadays are responsive). "Light" is definitely relative but at least they list the

I think "responsive" is a useful modifier (even though most CSS frameworks nowadays are responsive). "Light" is definitely relative but at least they list the exact size pretty early on. "Modern", however, is something everybody seems to use to describe their programming framework/library and it's useless. Think about it this way: if you removed the word "modern", what information have you lost?