html,
body {
  margin: 0;
  height: 100%;

  background: #000000;

  overflow: hidden;
  overscroll-behavior: none;
  user-select: none;
  
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

canvas {
  display: block;

  width: 100vw;
  height: 100vh;
  
  cursor: grab;
  touch-action: none;
}

canvas:active {
  cursor: grabbing;
}