It's all custom. I'd like to start using something like Bootstrap, but it'll be quite a task rewriting all the CSS and HTML.

Sweet! In that case, lemme congratulate you on a well-done job, sir!
Sorry for posting those images. I tried re-adding my avatar (somehow it had been replaced by something else). Good luck with this project - I was going to do something similar (codes snippet repository) but put that project on the shelve seeing as there's already so many great ones around. Maybe I'll do it as a personal challenge. As I say, you certainly did a great job here.

Thank you, but we're still a work in progress. Let me know if you see any shortcomings or have any suggestions.

BTW, you can delete those images through "Edit Images" to the top right.