Fixes after content design review

These changes address feedback from the Content team, who are both the content designers and end-users for this page.

Before:

![image](https://cloud.githubusercontent.com/assets/23801/4312134/792d0fe2-3eb6-11e4-9df1-f50434d9c11a.png)

After:

![image](https://cloud.githubusercontent.com/assets/23801/4320724/f3a2d88c-3f39-11e4-9a63-b0ad34ec6e11.png)

My gut is telling me that this might look odd on IE6/7. We might want to load up some VMs and check this but it doesn't stop us merging it right now.