Problem resizing iframe in wordpress page

I am wondering if someone could please help with a problem I have having using an iframe within a WordPress page. I have a test blog at https://nichethemes.com/test/mls-search/ that I will be developing into a real estate MLS Search site. On the page, I used the below code to embed another site into the page by pasting the code into the Page Creation window.

‘<iframe src=”https://www.mlsfinder.com/oh_cbr/rajumahone/&#8221;
width=”700″ height=”1300″ frameborder=”1″> I’m sorry, but your browser doesn’t support the IFRAME element.</iframe>’

No matter what numbers I include for the width and height, the frame will not resize. I have tried using several themes including Semiologic 3 column, Clasikue 1.0, Simple Green 1.5 and Sharepoint 1.5; so I assume it’s not the theme causing the issue since I get the same results with each theme. The current theme is man~ja 0.01. The site is embedded within the WordPress page, but it is within a small window. Is there way or method to resize the window so that visitors hopefully will not have to scroll?

Thank you so much for your time.