What are some of the little known HTML tags / CSS properties that you know of?

I'll start with CSS counters, I bet a lot of you never heard of them before!

Epic visual tool

Epson 5030UB 2D/3D 1080p 3LCD Projector Submitted March 28, 2016 at 04:05PM by just-a-bad-day http://ift.tt/22Ulaz0