finalPage.html

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>thank-you</title>
    <link rel="preconnect" href="https://fonts.googleapis.com">
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
    <link href="https://fonts.googleapis.com/css2?family=Bonheur+Royale&display=swap" rel="stylesheet">


    <script src="https://cdnjs.cloudflare.com/ajax/libs/sweetalert/2.1.0/sweetalert.min.js">
    </script>
    <style>


    </style>
</head>

<body>

    <script>
        swal("Congratulations", " Your Order succesfully placed ", "success", {
            button: "Done",
        });
        setInterval(function () {
            window.location.href = "index.html";
        }, 3000);
    </script>
</body>

</html>