White line, don't do it

At least, not when it's on a advertisement feature front/container

### Before

![screen shot 2014-06-26 at 12 24 12](https://cloud.githubusercontent.com/assets/74132/3397747/b8f56ab2-fd24-11e3-961e-c67d8e93a919.jpeg)

### After

![screen shot 2014-06-26 at 12 23 29](https://cloud.githubusercontent.com/assets/74132/3397748/bd864ba0-fd24-11e3-8875-db5edd61ac8b.jpeg)