Stephen style

I created the final UI for the code view! Some notes:
- **EDIT:** I didn't realize that there were the fonts within the assets (Helvetica Neue and Proxima Nova). I just used some default Google fonts, but we can swap them out with the ones we already had. In addition, we need some sort of monospace font for the code views (I imported Source Code Pro).
- Pretty much everything is a placeholder. We'll have to get the interactivity in using JavaScript/whatever.
- I dunno how you guys are doing the actual code view editing (the CSS/HTML pseudocode), but yeah there's just placeholder HTML with a LOT of `<br>` tags everywhere.
- I feel like a lot of the CSS is jank and lots of CSS tables are used. Whelp. Let me know if you guys have any suggestions.
- It's actually responsive! For at least Chrome and Firefox.

#### Please pull this branch and review it. Let me know if you have any questions about the design or how the HTML/CSS works. Cheers!