Make it responsive

![triangle rb](https://cloud.githubusercontent.com/assets/2317604/4079966/ace46664-2eda-11e4-9c3a-a83305fc6c83.png)

![triangle rb 2](https://cloud.githubusercontent.com/assets/2317604/4079988/e40ba972-2eda-11e4-9854-a649266d2ca1.png)