.slick-slide .product-cell:hover,
.row.gallery .product-wrapper .product-cell:hover {
    transition: all 0.5s ease-out 0s;
}
.image-box .image-content {
    position: relative;
}
.product-cell .image-box img.backimg {
    bottom: 0;
    left: 0;
    margin: 0 auto;
    position: absolute;
    right: 0;
    top: 0;
    opacity: 0;
}
.product-cell:hover .image-box img.backimg { 
   opacity: 1;
   transition: all 0.5s ease-out 0s;
}