html, body {
    background-color: black;
}

iframe {
    display: block;
    width: 100%;
    max-width: 1100px;
    aspect-ratio: 1440 / 839;
    height: auto;
    margin: 24px auto;
    border: none;
    flex: 0 0 auto;
    min-width: 0;
}

/* Mobile */
@media screen and (max-width: 1023px) {

}

/* Desktop */
@media screen and (min-width: 1024px) {

}

@media (max-width: 420px) {
    iframe { max-width: 100%; margin: 16px 0; }
}