I’ve been following a guide to start learning how to code, at least a little bit. When I got to the CSS section, I created another text document where I put the code to change the color to red, then in my main document I had to put this line of code beetween and :; this was supposed to create a connection beetween the other document to my main one, but it isn’t changing the colour at all.

Here’s the guide for those who want to see it: https://developer.mozilla.org/pt-BR/docs/Learn/Getting_started_with_the_web/CSS_basics
(This is the portuguese version but I’m almost sure there is one in english)

I tried changing name of the documents, didn’t work, then I tried another method to change the color it changed nothing. Honestly I just don’t know what’s wrong. I’m using Notepad++ by the way.