Mobile rendering on desktop page

We have a website at methodsof.com. There are a few custom types on here, these can be found at https://methodsof.com/courses/. Meanwhile, our posts labelled as Press Releases are working just fine https://methodsof.com/press-release/.

It isn’t exactly clear where these issues originated, but all plugins have been updated, and no other changes we’re aware of were made.

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