.video-wrapper {
    position: relative;
    aspect-ratio: 16 / 9;
    width: 100%;
    max-width: 800px;
    box-sizing: border-box;
    padding: 5px 5px 5px 5px
}

.video-wrapper iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}