Display Issue

Hello,

Thank you very much for this free plugin. It helps me a lot with building my website properly.
I feel like there’s a problem in the display of the single job post. Here’s the link: http://dev.sihgroup.com/jobs/monteur-externe-et-interne/ As you can see, the content is not displayed on the entire page like on your demo website : http://demo.presstigers.com/job-board-extensions/how-to-apply/ . The content only appears on the left side of the website, leaving the right side pretty empty.
How is it possible to resolve this issue?

Regards