Embed form displaying incorrectly on mobile

I have a contact form embed in the hero section on this page. It displays correctly on Desktop but on the mobile version, it pushes some of the content up off the top of the screen and also leaves a huge gap underneath between it and the next section. Can anybody identify why this is?

Website link: Webinar

Here is the embed code:


Here is my site Read-Only: LINK
(how to share your site Read-Only link)