I only knew 13 of 54 (24%) which is a huge surprise, I've been writing CSS for 26 years. I guess I have fallen further behind on modern CSS than I thought. Se

I only knew 13 of 54 (24%) which is a huge surprise, I've been writing CSS for 26 years. I guess I have fallen further behind on modern CSS than I thought. Seems like there's some other cool stuff to learn!