Item Page in Sidebar

PLEASE HELP!
I am doing a redesign for a friend, and they are using this plugin in the current site. I am strictly doing a redesign and now when you click on one of the portfolio items the content page shows entirely in the sidebar.
This is how it looks right now: https://www.wpggolf.ca/portfolio/silver-birch-design/

Please help!

The page I need help with: [log in to see the link]