CSS terminal "emulator"

I wanted to find a way to simulate a terminal with a custom flashing caret, and this worked pretty well. It's full of goofy, geeky references. Right now you can type LS, HELP, EXIT, and RUN the various "programs" (easter eggs!). I plan to build on it as the front end for a text-based adventure game.

Here's the working pen:
http://codepen.io/denmch/pen/ojvJoq