Resolution dependent layouts

Door middel van media queries pas ik de layouts van verschillende resoluties aan.
![image](https://cloud.githubusercontent.com/assets/7466854/4489112/42cde400-4a17-11e4-9028-ce89825e8dd2.png)

![image](https://cloud.githubusercontent.com/assets/7466854/4489118/551a62be-4a17-11e4-9589-3a4be5cf2cea.png)

![image](https://cloud.githubusercontent.com/assets/7466854/4489127/7ad2c8c0-4a17-11e4-9750-2aeea634ea49.png)