I'm trying to implement the use of an iframe to display a webpage from an outside website (more specifically, a form on that website) on a custom entity's form. I am having no luck with iframes, and the documentation out there is not helping. I've tried both an iframe and an html web resource with an iframe tag in a div. The only success I've had is getting a youtube video to show up. Otherwise, I am getting a blank iframe. When I inspect the frame source, I am getting a blank page (other than the youtube embed I tried). I've tried inserting a variety of urls, all to no avail. Is there any particular magic on working with iframes in dynamics? Am I missing something obvious? Thanks for any help.
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