* {
  cursor: default;
  -webkit-user-select: none;
  user-select: none;
}

html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
}

canvas {
  position: fixed;
  top: 0;
  left: 0;
  margin: 0;
  padding: 0;
}