I was wondering if anyone had any useful custom CSS for the Mystery Box. And/or if anyone could help me out?

• I would love for the "Buy ???" button to be in the same location as the "Back to the Box" link. It would make it easier for Mass buying.
• Or, at the very least, for the "Back to Arctic Frost" button to be removed on the buy page. If I'm on mobile (which is often), my fat fingers hit the Arctic button more often than not. It's frustrating.

(I'm also not sure if there is a better forum this question.)

Try this Useful Custom CSS Builder. What you ask for isn't part of the existing code, but asking there will be your best bet for an answer.