@media (min-width:1300px) {
.sub_visual{background-image:url(/images/pc/sub4/s_v4.png);} 

.video_box{height:500px;}
.bo_sch_wrap{margin:50px 0 30px !important; }
}
@media (min-width: 640px) and (max-width: 1299px){
 
.sub_visual{background-image:url(/images/tab/sub4/s_v4.png);} 
}

@media (max-width:1299px){
	.video_box{height:50vw;}
	.bo_sch_wrap{margin:5% 0 2% !important; }
}
@media (max-width:640px){
   .sub_visual{background-image:url(/images/mb/sub4/s_v4.png);} 
   
}