body {
    position: relative;
    padding: 0;
    margin: 0;
    height: 0;
    width: 100%;
    padding-bottom: calc(100% * (9 / 16));
    aspect-ratio: 16 / 9;
    place-items: center;
    place-content: center;
}

.vidTitle {
    position: absolute;
    z-index: 1;
    margin: 0;
    padding: 0;
    top: 10px;
    text-align: center;
    width: fit-content;
    color: gainsboro;
    background: black;
    padding: 0.25rem 0.5rem;
    border-radius: 5px;
    opacity: 0.75;
    transition: opacity 0.5s ease;
}

.vidTitle:has(+ video[playing]) {
    opacity: 0;
}

video {
    position: absolute;
    box-sizing: content-box;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    background-color: black;
}