This is the best! Just one quick question

[stub-official-band]

I think that the license made it clear that I can do this, but just one question. instead of downloading the source, can I just copy this code into a css file and link it to my index.html like you did on your website? here is the css I am talking about: click here. I was just wondering if this would work, or if I need to give attribution, or if I am even allowed to.