CSS☁️

Does anyone have some cute CSS I can use? :3
Ofc,I will gib creds to u
I can’t figure out how to add images myself cause im on tablet and I’m also just generally dum -3-
If no, can someone atleast tell me how to change my blogs bg? It doesn’t fit wit my profile 👉👈
https://imgbb.com/][img]https://i.ibb.co/JB6N6v3/9044-FF3-C-D4-BD-4396-BDA6-FAB9-E4-F8-E77-E.webp[/img][/url