I first started learning HTML some time around the year 2000. I was working for SBC Services, Inc, which has since become AT&T, and we built a site for their intranet, a place for their Human Resources departments to find guidance and documentation. It was a lot of fun, and HTML took hold of me. Of course, we mostly just had inline styles then, so it was ugly as sin, but boy was I excited when CSS became mainstream!
I have been reading a lot about CSS Grid lately, and I have to say I'm excited about it. I started coding back in the year 2000 (well, I actually started with BASIC back in the late 80's, but that's another story), and I remember when layouts were the bane of every coder's existence.