html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #000;
    touch-action: none;
    -webkit-user-select: none;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

#gameContainer {
    width: 100%;
    height: 100%;
}

#gameContainer canvas {
    display: block;
    touch-action: none;
}