Youtube channel slider not working in Win or MAC

Seen here on our client site http://www.hutchbiz.com/

It is the third set in the page slider. When viewed in Safari on either a windows based computer or a MAC the youtube breaks out of the slider and all 7 video's span across the web page broken.

It only happens in Safari. It works perfectly fine in Chrome, Firefox and IE.

I'm out of ideas here. Any help is greatly appreciated. Thank you to all in advance.

Ross