Untitled

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
    <style>
        body {
            background-color: #f4f4f4;
            font-family: Arial, sans-serif;
        }

        .container {
            max-width: 600px;
            margin: 50px auto;
        }

        .alert {
            margin-top: 20px;
        }
    </style>
    <title>Message envoyé</title>
</head>
<body>

    <div class="container">

        <center><h2>Message envoyé</h2></center>

    </div>

</body>
</html>