body, html {
  background-color: white;
  height: 100%;
  margin:0;
  padding:0;
  overflow: hidden;
}
#emitter {
  visibility: hidden;
  background-color: #222;
  position: absolute;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  top: 40%;
  left: 0%;
}
.dot-container {
  position:absolute;
  left:0;
  top:0;
  overflow:visible;
  z-index:5000;
  pointer-events:none;
}
.dot {
  position: absolute;
  pointer-events: none; /*performance optimization*/
}