Just got into web development.

Y U NOT WORKING RIGHT?

How do you guys make really complex websites when I can even center an unordered list without the first child...

I write something like align-vertically: center;
And what does it do? NOTHING!
And if it does something, it mirrors the whole page, makes it all bright pink and then everything explodes and I'm alone in a dark void, only me and my PC are there and somehow I have access to the internet.
And then I look it up at stackoverflow and I'm like: Oh, ok, I'll do it this way then.
And it still doesn't work and does absolutly nothing!
So I'm trapped in this void of nothingness till the end of my days.
At least that's what it feels like.

How do you tell HTML from HTML5?
Ans:
*Try it out in Internet Explorer
*Did it work?
* No?
* It's HTML5