UI Bug on Mobile Device

Hey,

you may want to optimize the general CSS also for mobile.

![1photo](https://f.cloud.github.com/assets/820391/1367877/54bf7f3c-3967-11e3-9054-221d1f1ed694.PNG)
![1image](https://f.cloud.github.com/assets/820391/1367878/54c2a356-3967-11e3-8edd-80f4049a5f03.png)
