body {
  font-family: sans-serif;
  padding: 0;
  margin: 0;
  background-color: #000;
  overflow: hidden;
  -webkit-user-select: none;
  -moz-user-select: none;
  -o-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

canvas {
  position: absolute;
  top: 0;
  left: 0;
}