body {
    font-family: Arial, sans-serif;
    text-align: center;
    background-color: #f0f0f0;
    margin: 0;
    padding: 0;
}

h1 {
    background-color: #333;
    color: #fff;
    padding: 20px;
    margin: 0;
}

nav ul {
    list-style-type: none;
    padding: 10px;
    background-color: #444;
}

nav ul li {
    display: inline;
    margin-right: 15px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-size: 18px;
}

nav ul li a:hover {
    text-decoration: underline;
}

section {
    margin-top: 20px;
}

button {
    margin: 5px;
    padding: 10px 20px;
    font-size: 16px;
}

.content-section {
    display: none;
}

#home {
    display: block;
}

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

a:hover {
    text-decoration: underline;
}