body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    margin: 0;
    padding: 0;
}
.card {
    background: white;
    padding: 20px;
    margin: 50px auto;
    max-width: 500px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    text-align: center;
}
.subtitle {
    font-size: 1.2em;
    color: #555;
}
.btn {
    background-color: #007bff;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    display: inline-block;
    border-radius: 5px;
    margin-top: 15px;
}
.btn:hover {
    background-color: #0056b3;
}
form input, form button {
    width: 90%;
    padding: 10px;
    margin-top: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}