body {
  background: #222;
}
#saguaro { 
  width: 80%;
  max-width: 800px;
	position: relative;
	overflow: hidden;
  margin: 0 auto;
	}
#saguaro:hover {
  cursor: none;
}
#saguaro img {
  width: 100%;
  height: auto;
}
#glasses { 
  width: 60%;
	position: absolute; 
	pointer-events: none;
	-ms-touch-action: none;
	-webkit-touch-callout: none;
	-webkit-user-select: none;
}
#glasses rect {
	mix-blend-mode: multiply;
}