@charset "utf-8";


.video_box{margin:0 auto;}
@media (min-width:1300px) {
	 .video_box{width:80%; height:600px;}
}
 
@media (min-width:640px){
	
}
@media (min-width: 640px) and (max-width: 1299px){
	 .video_box{width:100%; height:45vw;}
}
@media (max-width:1299px){
	
}
@media (max-width:640px){
	.video_box{width:100%; height:43vw;}
 
}