Arcade Basic with Sensei

Hello Guys,

I have a arcade basic theme with the plugin sensei, but i need some help to resolve one problem.

If you look in the main page everything is correct http://carlosrodrigues.it/libertynet/ the problem is when you enter in the course i not have an margin to the left and the side bar in push to the bottom, please see http://carlosrodrigues.it/libertynet/course/introducao-ao-pentest/

Who i can fix my problem?

Thanks in advance
Luis