body {
    font-family: Arial, sans-serif;
    background-color: black;
    color: white;
    text-align: center;
    margin: 0;
    padding: 0;
}
header {
    background: red;
    padding: 20px;
    font-size: 30px;
    font-weight: bold;
}
nav {
    background: darkred;
    padding: 10px;
}
nav a {
    color: white;
    text-decoration: none;
    margin: 15px;
    font-size: 20px;
}
section {
    padding: 20px;
}
footer {
    background: darkred;
    padding: 15px;
    width: 100%;
    position: relative;
    bottom: 0;
}
iframe {
    width: 80%;
    height: 400px;
    border: none;
}