why does my css file not link with my index.html file when i have a javascript file too?

Here is my git hub page= https://github.com/25garcial/rock-paper-scissors

the problem is that the css page does not link with my html page. i have done nothing different from any other page except that i now have a javascript file.

I have tried moving the link and script tags around and it does not fix the problem. I still do not know how to fix this problem as i have found nothing else related to my problem and i cannot figure it out myself.