How to remove scrollbar from embedded dashboard's content

[boris_miler_ix]

I have a Looker dashboard that has a filter header and displays its content below it. However, the content has a vertical scrollbar to view all the Looks/Visualizations. When this is embedded on my application, into the iframe, it too has a scrollbar.

What I want is for the application/webpage to the only thing with the scrollbar and for the dashboard content/iframe to have increased height to take up more space on the webpage for it to scroll down.  How can this be done?