Creating mobile-first design. It took a while to make the navigation and footer ('regular') links display differently, but I might have to omit the footer links for the mobile design, anyway. I still haven't figured out how to make the dividing borders appear between each footer link, the way they were doing before I began altering the display for the navigation links. I want to solve that problem even if the footer links are deleted from the mobile design, just to make sure that I don't forget about it if it shows up in larger-screen designs.
Revert "I'm unclear what this commit is for, but I have to get these out of the way before I can merge my most recent changes from the 'testing' branch."

This reverts commit 27a2518a0b9c34a0b3ffdc6fc93a0835a4ab134c.
Merge branch 'testing'