About One tone Theme Video Youtube

Hi Every one

i install one tone theme in my wordpress web, and i use my youtube video as the header, but the problem is, the video is not wide full on the area header like the demo theme here ,wordpress themes onetone

My web result like this, Bringin Tour , it left a space in right and left the header.. not full wide , how can i fix these ? i want my web like these wordpress themes onetone

Thanks