I like how FCC tries to push me up to my limits. I could have complained about giving too little knowledge to design something that demands more knowledge - but that’s actually good - it makes you search the internet so that you learn it by yourself too.
I hope the placement of the up button in the bottom won’t trigger your OCD
Edit 1: Hmm… strange things happening. The mobile dropdown won’t work in codepen… But it worked outside of it when I made this in Brackets IDE…
Edit 2: Issue is gone