body {
    background-color: black;
    color: white;
    font-family: sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
footer {
    font-size: 0.8em;
    text-align: center;
    margin-top: auto;
    padding: 10px 0;
}
iframe {
    border: none;
    width: 100%;
    min-height: 90vh;
}