css – Why is @import not working properly?

Question:

I'm trying to import a CSS, inside another but it's not working, the directory structure is like this:

style.css
css/agoravou.css

But the command @import url('css/agoravou.css') screen; .
Does anyone know what can it be?

Answer:

@import must be on the first line of the file.

But it could also be some problem with css folder permissions.