I think I nailed this, but want to know if there’s anything I could tidy up in the CSS or if this is just how it looks?
Thank you
Well done, @mcbiscuits437!
Everything looks fine. 
I don’t see anything that could be tidied up more.
When using GitHub a great way to show the running code is by activating GitHub Pages for your repo. This will publish everything under a specific GitHub domain. You can then post both GitHub links (code and published page) when solving a new task.
https://docs.github.com/en/pages/getting-started-with-github-pages/configuring-a-publishing-source-for-your-github-pages-site
Have a nice day,
Michael