Content Overflowing Beyond Theme Margins

http://www.jkmobiledjs.com

I am trying to extend the sidebar and main post area to fit all the information on each page. It is overflowing as of now and I was hoping for help that no matter the amount of information, the page will extend. I know this is done through the template but not sure where to change the code. Can someone please help me along? Sorry for my ignorance.