Hi,

it maybe helps what you have done so far. seems you have a couple if iframes set.

What I can recommend is to include it like a video ( http://www.tinywebgallery.com/blog/advanced-iframe/advanced-iframe-pro-demo/responsive-videos) if the page is fully responsive or to set the height depending on the width with media queries like shown here: http://www.tinywebgallery.com/blog/advanced-iframe/advanced-iframe-pro-demo/set-height-with-media-query

Best reagards,

Michael