Youtube videos not displaying correctly

I’m loving the theme and the amount of easily accessible customization it offers. I’m having an issue where all of the YouTube videos I embed into my posts have a large, white space above them. It’s apparent in both preview mode and when the post is published and live on the site. It disrupts the flow of my content in a jarring way and I’ve not been able to figure out what I need to change in order to fix the issue. Any help is greatly appreciated.

The page I need help with: [log in to see the link]