Optimizing my JotForm for mobile

I recently created a jot form as a popup on my website's homepage.  The problem I'm running into is how to optimize your form for mobile devices.  On my iPhone, only a portion of your form shows up (essentially the middle of the form), and it's impossible to close it so that a visitor to my website on a smart phone can actually see my website.  Can you please tell me, or send instruction for my website programmer, on how to shrink the size of your form on mobile devices, or just deactivate it on mobile devices?  Please help ASAP....many of my target customers will be viewing my website when I do a Webinar on Tuesday, 7/19.  Thank you!!!

Please remove also the unecessary CSS code on your form https://www.jotform.us/form/61795974131161 and then add the Mobile responsive widget to it as well. Then, re-embed the form on your website.

Here is the screencast video for guidance. 

Let us know if this did not resolve the issue.