.mark-in-cart {
    position: absolute;
    background: #000;
    color: #fff;
    padding: 3px 8px;
    z-index: 3;
}

.marked-detail {
    padding: 10px 15px;
    font-size: 15px;
}

.catalog-product-view .mark-in-cart {
    z-index: 1;
}