.product_detail_visual{display:block; width:100%; max-width:1440px; margin:0 auto;}
.product_detail_visual img{width:100%; vertical-align:top;}

@media all and (max-width:1440px){
    .product_detail_visual{width:calc(100% - 400px); margin:0 200px;}
}
@media all and (max-width:1280px){
    .product_detail_visual{width:calc(100% - 120px); margin:0 60px;}
}
@media all and (max-width:990px){
    .product_detail_visual{width:100%; margin:0;}

}