body {
    background-color: black;
    color: #00FF00;
    font-family: 'Courier New', Courier, monospace;
    margin: 0;
    padding: 0;
}

header {
    background-color: #111;
    padding: 20px;
    text-align: center;
}

header h1 {
    font-size: 2.5em;
    color: #00FFFF;
}

nav ul {
    list-style-type: none;
    padding: 0;
}

nav ul li {
    display: inline;
    margin: 0 15px;
}

nav ul li a {
    color: #FFD700;
    text-decoration: none;
    font-weight: bold;
}

main {
    padding: 40px;
    text-align: center;
}

footer {
    background-color: #111;
    text-align: center;
    padding: 10px;
    position: fixed;
    bottom: 0;
    width: 100%;
    height: 30px;
}