Guys, forgive me for suggesting because I’m a lurker, but by far the biggest ‘look & feel’ issue you have imho is on mobile.
You really should consider a logo instead of “Mastodon Meta Discussion Board” which takes up 4 lines on my mobile (a pretty standard screen size in the form of an iPhone 7)!! That’s a big waste of real-estate on mobile. This even blocks the search entry (see below). This should really be limited to one line if at all possible.