Personally the custom top bar was the hardest part though.
First I had to figure out how to make the usual itch box background to hide without all the nested elements hiding, and then there was an issue with the dropdown thing that pops down when you press the arrow next to your profile. The dropdown was somehow being layered behind my main column’s background element so I had to figure out that too.
To me, it looks like this:
What about you? Could you include a screenshot? (I don’t know what the top bar looks like to a non-editor user like a random person as signed out, the bar disappears. )