Iframe Hides sections

Hi All,

I have implemented some custom code for an iframe:

<iframe width="100%" height='800' frameborder=0 src="https://cdn.forms-content.sg-form.com/d997c672-04e8-11ec-9cc1-3a9e2a2160a4"/>

The issue with this is it hides every section after it.

Any thoughts on how to solve this?

Here is my site Read-Only:

(Webflow - Doorward Brochure Site)