body {
    font-family: Arial, sans-serif;
}

h1 {
    text-align: center;
}

nav ul {
    list-style-type: none;
    padding: 0;
    text-align: center;
}

nav ul li {
    display: inline;
    margin: 0 10px;
}

nav ul li a {
    text-decoration: none;
    color: #007BFF;
}

section {
    margin: 20px;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.button {
    display: inline-block;
    padding: 10px 20px;
    font-size: 16px;
    color: white;
    background-color: #007BFF;
    border: none;
    border-radius: 5px;
    text-align: center;
    text-decoration: none;
    margin: 10px 0;
}