YouTube Video Wrap Size

For some reason I am not able to adjust the "video wrap" padding-top size that is currently 56% on my embeded YouTube videos on this page: http://zephjewell.com/demo-reel-dramatic/ I have tried making changes to custom css but I am not able to find out why "padding-top" can not be adjusted. As a result all of my YouTube videos are showing up square rather than the 16:9 size. I welcome your input.