Hustle responsiveness not working properly

I'm setting up Hustle and I noticed there's a css responsiveness issue with the image showing on my custom content pop-up. See the screen capture video of the issue here:
https://artlauncher.online/wp-content/uploads/2017/08/hustle_responsiveness_issue.mov

This happens in Chrome and Firefox. As always, I appreciate your help :slight_smile:

Best,
Dave