12px nudge down of alert box

12px of breathing room between the alert-box and the nav. Yuss.

![screen shot 2014-0
9-17 at 2 21 15 pm](https://cloud.githubusercontent.com/assets/220240/4311635/9b6c3930-3eb0-11e4-8ef6-0d8e1a9ef30c.png)
![screen shot 2014-09-17 at 2 23 48 pm](https://cloud.githubusercontent.com/assets/220240/4311695/2b9fdf66-3eb1-11e4-89c9-e286d7e2bf3b.png)

***Tada!***