body {
  margin: 0;
  background-color: #000;
}
.game {
  position: absolute;
  top: 0;
  left: 0;
  margin: 0;
  border: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  display: block;
  image-rendering: optimizeSpeed;
  image-rendering: -moz-crisp-edges;
  image-rendering: -o-crisp-edges;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: optimize-contrast;
  image-rendering: crisp-edges;
  image-rendering: pixelated;
  -ms-interpolation-mode: nearest-neighbor;
}
.Nav {
  position: fixed;
  z-index: 10000;
}