html, body {
    margin: 0;
    padding: 0;
    height: 100%;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    background: #000;
}

video {
    width: 50%;
    object-fit: cover;
    min-width: 640px;
    min-height: 360px;
    border-radius: 14px;
}