body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
}

nav {
    background-color: #333;
    padding: 1em;
}

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
}

nav ul li {
    margin: 0 1em;
}

nav ul li a {
    color: white;
    text-decoration: none;
}

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

h1 {
    text-align: center;
    margin-top: 2em;
}

.content {
    max-width: 800px;
    margin: 2em auto;
    padding: 1em;
    background-color: white;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}