Google Forms not full page

http://minhalacademy.com/volunteer/

I want the google form to be on the full page when I embed it. I have already tried to input a different size, but it all shows up the same in a small window. How can I make it so the form is fully on the page and doesn't need scrolling?

 

Hello,

Paste the code given below in Custom CSS section
(Appearance -> Theme Options -> Styling Options -> Custom CSS) of your dashboard.

Code:

.fullwidth p iframe {
height: 860px;
}

It will resolve your issue.

Thanks & Regards
Yogesh Bhade