html, body {
  margin: 0;
  height: 100%;
  background: #000;
  overflow: hidden;
  font-family: 'Press Start 2P', monospace;
}
#wrap {
  position: fixed;
  inset: 0 0 22px 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
#game {
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  background: #000;
  box-shadow: 0 0 40px #400;
}
#help {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  height: 22px;
  line-height: 22px;
  font-size: 8px;
  color: #a88;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
}