.product-card img {
    height: 300px;
    width: 100%;
    object-fit: cover;
}

.dropdown-submenu {
    position: relative;
}

.dropdown-submenu > .dropdown-menu {
    top: 0;
    left: 100%;
    margin-top: -1px;
    display: none;
}

.dropdown-submenu:hover > .dropdown-menu {
    display: block;
}