Theres a good deal of empty space when rendered on my machine, to the right of this scrollbar. Doesn't bother me, but might be something to change!

It looks great @Corey! I feel like this could be a sticky menu, so it’s alway visible. The buttons on the top left might need a tooltip IMHO to know what they do. There is some CSS styling that might help, I’ll try to do a PR. Overall looks amazing!