body {
    font-family: Arial, sans-serif;
    background: #f8f9fa;
    padding: 20px;
}

.container {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    max-width: 600px;
    margin: auto;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.header {
    text-align: center;
    margin-bottom: 20px;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    background: #0d6efd;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
}

.footer {
    margin-top: 20px;
    font-size: 12px;
    color: #6c757d;
    text-align: center;
}