[moon] center the moon and improve integration

##### Homepage Moon re-integration

:heavy_check_mark: Center the moon
:heavy_check_mark: Change the Dom to have a better integration

##### Result


![capture d ecran 2014-09-25 a 14 46 31](https://cloud.githubusercontent.com/assets/2462303/4404499/03232b18-44b2-11e4-9484-4b3ab4f6a8a4.png)