    <link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/sweetalert2/1.3.3/sweetalert2.min.css">
    <link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/sweetalert2/0.4.5/sweetalert2.css">
    <script type="text/javascript" src="https://cdn.jsdelivr.net/sweetalert2/1.3.3/sweetalert2.min.js"></script>