Fix padding issues on multimedia banding

I introduced a styling regression with #5445 

/cc @kaelig 

### Before
![google chrome 8](https://cloud.githubusercontent.com/assets/80089/3857182/d531ca74-1f00-11e4-8f39-2546d7dbd023.jpg)

### After
![google chrome](https://cloud.githubusercontent.com/assets/80089/3857184/dbfb1ea0-1f00-11e4-8741-d4e5f7f08c84.png)