* {
    /*background: #000;*/
    border: 0;
    margin: 0;
    padding: 0;
}

canvas {
    display: block;
    height: 100vmin;
    left: 50%;
    margin-left: -50vmin;
    overflow: hidden;
    position: relative;
    top: 50%;
    width: 100vmin;
}