Videos overlapping

On our page

http://kutsalmekanlar.com/dunya-camileri-kubanin-izinde-video-galerisi/

you can see that videos are overlapping. How can this be avoided?

Thanks

https://wordpress.org/plugins/wp-youtube-gallery/