Remove unnecessary dotted CSS borders

![Captura de Tela 2013-04-01 a s 01 07 40](https://f.cloud.github.com/assets/2215432/325096/862b4220-9afe-11e2-9e85-50a54d46dc90.png)

I hope everything is ok :)

Thanks for the help, @MrZYX.