body {
    font-family: Arial, sans-serif;
}
.container {
    margin-top: 50px;
    max-width: 400px;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}
h2 {
    text-align: center;
    margin-bottom: 20px;
    color: #343a40;
}
.alert {
    text-align: center;
}