body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    padding: 20px;
    max-width: 800px;
    margin: 0 auto;
}
h1, h2, h3 {
    color: #333;
}
p {
    margin-bottom: 1em;
}
nav a {
    margin-right: 10px;
    text-decoration: none;
    color: #007acc;
}
nav a:hover {
    text-decoration: underline;
}
img {
    max-width: 100%;
    height: auto;
}