* {
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
    -moz-tap-highlight-color: rgba(0, 0, 0, 0);
    tap-highlight-color: rgba(0, 0, 0, 0);
    user-modify: read-only;
    user-drag: none;
    -webkit-user-select: none;
    /* Chrome all / Safari all */
    -moz-user-select: none;
    /* Firefox all */
    -ms-user-select: none;
    /* IE 10+ */
    user-select: none;
    cursor: default;
}

html,
body {
    background-color: #000;
    padding: 0;
    margin: 0;
    overflow: hidden;
    width: 100%;
    height: 100%;
}

#closeButton {}

canvas {
    background-size: 100%;
    display: block;
    margin: 0 auto;
    image-rendering: optimizeSpeed;
    image-rendering: -o-crisp-edges;
    image-rendering: -webkit-optimize-contrast;
    outline: none;
    -webkit-tap-highlight-color: transparent;
    /* mobile webkit */
}