html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  touch-action: none;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
  background-color: #1a1a2e;
}

#gameCanvas {
  position: absolute;
  background-color: #87CEEB;
  touch-action: none;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}