html,body{
    margin: 0;
    padding: 0;
    font-family: Arial;
    font-size: 12px;
    color: black;
    background: black;
    height: 100%;
    width: 100%;
}

#container{
    height: 100%;
    width: auto;
    max-height: 546px;
    max-width: 420px;
    margin: 0 auto;
}

canvas{
    object-fit: contain;
    display: block;
    height: 100%;
    width: auto;
    margin: 0 auto;
}