body {
    font-family: Arial, Helvetica, sans-serif;
    background: #ffffff;
    color: #000;
    max-width: 900px;
    margin: 40px auto;
    line-height: 1.6;
}

h1, h2 {
    color: #003366;
}

nav {
    margin: 20px 0;
    padding: 10px 0;
    border-bottom: 1px solid #ccc;
}

nav a {
    margin-right: 15px;
    color: #003399;
    text-decoration: none;
}

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

.section {
    margin-top: 30px;
}