New User - embed H5P Iframe question

Hello,

I just signed up for trial of Articulate Rise. I love the ease of use and that I am able to make single, continuous scrolling pages instead of the typical slide based elearning modules with all the next/continue buttons.

The most obvious limitation of Rise for my purposes is the lack of quiz/evaluation types, e.g., drag the words, fill in the blanks (paragraph length, not one sentence), dictation, mark the words, sort paragraphs, etc.

My idea is to make H5P modules and embed them into Rise using the Multimedia/Embed function. After a couple of hours of experimentation, I was able to do this successfully (not as easy from the Wordpress plugin as one might think). I have however run into a problem: the Iframe content is not responsive. That is to say, the Iframe looks totally differently on a laptop vs on a smart phone. I would like the Iframe to encompass all the content inside the frame without the need to vertically scroll inside the Iframe. 

Does anyone know if this can be done? Is there something simple I am missing? Any help would be greatly appreciated.

All the best,

David