CSS HELP !!!!!:DDD

OKAY I FIGURED OUT THE CSS THINGYYY!!! THANKS TO THE PPLS WHO HELPED SO IMMA SHPRED THE INFOO
[ NOT MY DOC CREDS TO RILEY]
https://docs.google.com/document/d/1sduYzEXUMBjrDBWgzKy471k0IQlQWGMBGiZgkiVc9CQ/edit?usp=sharing

thi is a document that someone made and its a pretty good guide!! ive been on here for 2 ish days and figured it ous thanks to this !!! so if anyone has been needing help use that doc <333