@media screen and (max-width: 700px) {
	.product_description img,product_detail img{
		max-width:100%;
		height:auto;
	}
	.item-box .inner > .img-box .sub_img-box li{
		float:left;
		border-top:1px #CCC solid;
		border-left:1px #CCC solid;
		border-right:none;
		border-bottom:1px #CCC solid;
		
	}
	.item-box .inner > .img-box .sub_img-box li:nth-last-of-type(1){	
		
		border-right:1px #CCC solid;
		
		
	}
}
@media screen and (max-width: 600px) {
	.item-box .inner > .img-box .main_img-box{		
		width:100%;
	}
}

@media screen and (max-width: 580px) {
    .banner_pt_campain{    
        display:none;
    }
    .banner_pt_campain_w580{
        display:inline;        
    }    
}