Mobile Responsiveness Broken

Hi,

In editing my site, it appears the mobile responsiveness is broken as when the site is viewed on the phone a horizontal scroll bar appears at the bottom.

I am not sure why as I did not edit the mobile queries.

I am not familiar with mobile queries and am not sure how to go about fixing the responsiveness.

Any advice would be helpful.

Site:
https://www.getencounter.com/

–Pat