body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background-color: #121212;
    color: #f0f0f0;
    font-size: 18px;
    line-height: 1.6;
    margin: 0;
    padding: 0;
}
header, nav, footer {
    background-color: #000;
    text-align: center;
    padding: 20px;
}
nav a {
    margin: 0 10px;
    color: #f1c40f;
    text-decoration: none;
    font-weight: bold;
}
nav a:hover {
    color: #ffffff;
}
h1, h2 {
    color: #f1c40f;
}
section {
    padding: 20px;
}
ul {
    padding-left: 20px;
}