Large gap above form when embedding.... & how to load submit url in iframe

Questions #1: Whenever I embed my form into adobe muse there is a large gap above the form.

I am embedding it into an iframe with a scroll bar, therefore, this huge gap is an issue...

Check out the picture below to see exactly what I mean. 

The above picture is my form embedded into adobe muse... you can see the scroll bar to the right of the form...

so I can't just move the entire thing up because then the scrollbar will look crazy...

How do I get rid of that white gap there?!?!?! I bet it's a really simple fix. help??

Questions #2: I ALSOOO wanted to know how to make it so after they submit the form, the URL they get redirected to is loaded inside the same iframe 

(the same iframe the form they just submit was just in)

What it is doing right now is loading the URL in an entire new webpage.

If that makes sense?

Basically, I just want the URL that's loaded after they submit to be loaded & opened within the iframe the forms was in. Instead of opening the URL in an entirely new page.

Is it possible you could share the website's URL so we can check both issues?

It is hard to provide any solution, without seeing how the form is showing on the page.

We'll wait for your response.

Thank you!