body {
    font-family: Arial, Helvetica, sans-serif;
    max-width: 900px;
    margin: auto;
    padding: 40px;
    line-height: 1.6;
    color: #222;
}

h1, h2, h3 {
    color: #111;
}

img {
    max-width: 100%;
    height: auto;
}

.nav {
    margin-bottom: 30px;
}

.nav a {
    margin-right: 20px;
    text-decoration: none;
    font-weight: bold;
    color: #333;
}

.nav a:hover {
    text-decoration: underline;
}