iFrame defaults to scrolling bar

I have an iframe that I am importing into a post. The minicorp theme seems to cutoff displaying all the forms and adds a scrolling bar. I’d like to display it so all the forms and the submit button show without a scroll bar. Any help would be appreciated. I can’t give you a url so see the linked screen cap.

https://www.tibersoft.com/wp-content/uploads/2015/12/Screen-Shot-2015-12-08-at-2.11.14-PM.png