html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #f4e8d0;
}

body {
  cursor: crosshair;
  touch-action: none;
}

canvas {
  display: block;
  width: 100vw;
  height: 100vh;
  background: #f4e8d0;
  touch-action: none;
}