issues with menu

hello!
i’ve been having a bit of trouble with the primary menu (https://www.prettyheartbouquet.com/)

my primary concern with the menu is that i’d really like to get it centered, but i havent been able to figure out how (i’ve tried fiddling with the code in a child theme to no avail) — additionally, i’m having a hard time figuring out which elements in the theme options relate to it?
(usually the way i try to figure out codes is by assigning everything an arbitrary bright color to see what goes where, but the menu seems to respond to multiple elements within the link and text options)

edit: figured out the blog post, it was a widget gone awry. still need help w/ the menu tho!

i’m using comicpress with easel and easy google fonts. any help is appreciated!
-e