.detail_qty .prod_info_quantity{display: flex;flex-direction: row;flex-wrap: nowrap;justify-content: flex-start;}
    .detail_qty .prod_info_quantity .clear{display: none;}
    .detail_qty .prod_info_quantity .btn-primary{color: #ffffff;background-color: #000000;font-size: 18px;height: auto;padding: 0 15px;margin-left: 15px;border-radius: 5px;text-decoration: none;display: flex;justify-content: center;align-items: center;white-space: nowrap;}
    @media (max-width: 768px){
        .detail_qty .prod_info_quantity .btn-primary{font-size: 14px;}
    }