Iframe and section footer disappear

Design help Custom code
1

Hello,

I have an issue with putting an iframe into a page : when doing so, my footer and section below the embed code section are disappearing.

I have already checked : the iframe is well closed with the “”

I would be very grateful to any help !

Thank you.

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

2

Hello,

Could you share a read-only link?

3

And published site link to the page as well.