I remember this being a result of other issues – still I want to keep an issue as a reminder this is still problematic. I also know this might become obsolete with a new header, in that case it can just be closed :P
The main menu text is too small.
I know the navbar holds much text, which is problematic on smaller screens but should be changed, too.
Possible text tweaks that can help:
"Documentation" -> "Docs"
"Join Codeberg e.V." -> "Join"
Codeberg Issues -> (Why have Codeberg issues and Issues in the main nav?)