body {
    font-family: Arial, sans-serif;
    text-align: center;
    padding: 50px;
}

nav {
    margin-bottom: 20px;
}

nav a {
    margin: 0 15px;
    text-decoration: none;
    font-size: 18px;
}

button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
}