div#gameContainer {
    width: 56.25vh !important;
    height: 100vh !important;
    position: relative;
    background: rgb(255, 255, 255);
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    position: absolute;
    margin: auto !important;
}

canvas {
    width: 56.25vh;
    height: 100vh;
}