i need MORE CSS HELPNBHUYI

so i figured out how to fix the last issue (it was kind of embarrassing SO i took the blog down!)
i haveee a few more problems though Jeubefuw8g49ui3uy7g8i?
uh i was wondering if anyone could help me make the edges of like- my profile box round if that makes sense ??hufsvjs
i can explain a bit more if anyone needs it but help would be greatly appreciated !!