Massive gap in the pop up iframe

Hi,

I’ve embedded the WP video lightbox using the rel=”wp-video-lightbox”, but there is a massive gap in the pop up to the video, you can check it here: http://212.48.85.19/~beyondstorage/ – scroll down to where it says ‘OUR GUIDE TO SELF STORAGE’ and the videos are there,

Cheers

https://wordpress.org/plugins/wp-video-lightbox/