.product-group {
    display: flex;
    flex-wrap: wrap;
    padding: 10px;
}

.product-group > .product-group-item {
    display: flex;
    width: calc((100% - 60px) / 7);
    position: relative;
    margin: 10px 10px 0 0px;
    height: 130px;
}

.product-group > .product-group-item:nth-child(7n+7) {
    margin-right: 0;
}

.product-group > .product-group-item:nth-child(-n+7) {
    margin-top: 0;
}

.product-group > .product-group-item > img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-group > .product-group-item > span {
    position: absolute;
    bottom: 0px;
    width: 100%;
    text-align: center;
    color: white;
    font-size: 12px;
    background-color: rgba(0, 0, 0, 0.4);
    line-height: 24px;
}

.backToTop {
    display: none;
    width: 18px;
    line-height: 1.2;
    padding: 5px 0;
    background-color: #000;
    color: #fff;
    font-size: 12px;
    text-align: center;
    position: fixed;
    _position: absolute;
    right: 10px;
    bottom: 100px;
    cursor: pointer;
    opacity: .6;
    filter: Alpha(opacity=60);
}