Please help me defeat the Mysterious Ugly Box

[doodlemancy]

I switched to the Mobility theme today so that my blog would look better on mobile devices. I've customized all the colors and fonts and stuff to my liking, but I can't for the life of me figure out how to get rid of this eyesore box at the top:

I've flicked all the modules on and off to see if I can isolate it, and it doesn't seem tied to any of them. IDEALLY I would just have my blog title and subtitle there, and no random "Modules" link (which, for what I'm doing here, is pretty redundant). I've combed all the journal customization options over a few times trying to figure out what controls what happens in that box and how I can modify it or at least shoo it away, but I've come up empty-handed. I assume this is probably something I'd have to attack with CSS? I'm not good at that stuff but I can kinda fake it until I make it, although I just honestly don't know where to start here. I would super appreciate anyone's insight.