.secondary-images .secondary-image-bg{display:block;width:100%;height:138px;background-size:cover;background-position:center;background-repeat:no-repeat;}
.secondary-images {
    margin-top: 20px;
}
.product-main-image .main-image-bg{display:block;width:100%;height:455px;background-size:cover;background-position:center;background-repeat:no-repeat;}