body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}
.container {
    max-width: 800px;
    margin: 50px auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}
h1, h2 {
    text-align: center;
}
footer {
    background-color: #333;
    color: #fff;
    padding: 20px 0;
    text-align: center;
}
a {
    color: #007BFF;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}
.btn {
    display: inline-block;
    padding: 10px 20px;
    margin-top: 10px;
    border: none;
    background-color: #007BFF;
    color: #fff;
    border-radius: 5px;
    transition: background-color 0.3s;
}
.btn:hover {
    background-color: #0056b3;
}