How do I post a link that scrolls down

[Kawaii-Kitty]

Simple question, and I need a simple answer.

Confuzzling? Well, I've seen on different websites, at the top of the page there will be automatic links, and when you click them, it takes you to that part of the page.

Is it possible to do on any website? Can someone please tell me how?

I looked on google, but I cant find anything...

Thanks!