html, body { margin:0; padding:0; background: #111111; cursor: crosshair; }

svg { position:fixed; top:0; bottom:0; left:0; right:0 }

path, rect, circle {
  mix-blend-mode: screen;
  animation: fadeIn 150ms ease-in;
}

@keyframes fadeIn {
  0%{ 
    opacity: 0;
  } 
  100% {
    opacity: 1;
  }
}