I haven't done HTML or CSS since HTML4 and CSS2 were cutting edge. This kind of stuff blows my mind now. Very cool, too bad frontend is arcanine magic these days because I don't have time to learn all this anymore.

I feel like 90% of what he did was barely noticable. I did the core frosted glass look back in around 2012. I still think it is great and the contrast is fine if you do it right.