Remove unnecessary navigation bar to access mobile site

# After 

![Pantallazo_](https://f.cloud.github.com/assets/1108789/320959/2d8a2a4e-997f-11e2-8769-c7b543b8afa8.png)

# Before

![Pantallazo-1](https://f.cloud.github.com/assets/1108789/320961/339203bc-997f-11e2-8af0-79a3d13a88c0.png)

And Remove excess `:css`