body{
    margin: 0;
    background-color: #111;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

canvas{
    aspect-ratio: 16 / 9; 
    max-width: 100%;
    box-sizing: border-box;
    max-height: 100%;
}

canvas:after{
    display: block;
    content: "";
    min-width: 100vw;
}