html, body {
  padding: 0px;
  margin: 0px;
  background: #191a1d;
  font-family: "VT323", monospace;
  color: #FFF;
  height: 100%;
}

canvas {
  background: none;
  margin: auto;
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translateX(-50%) translateY(-50%);
}