/* FIX: disable hover swap (you have only 1 image) */
.card-product .product-img img.img-product-hover {
    display: none !important;
    opacity: 0 !important;
    visibility: hidden !important;
}

/* ensure main image stays always visible */
.card-product .product-img img.img-product {
    opacity: 1 !important;
    visibility: visible !important;
    position: relative !important;
}