.falling-wrap {
  position: fixed;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  z-index: 999999;
  pointer-events: none;
}

.leaf-scene {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 100%;
  -webkit-transform-style: preserve-3d;
          transform-style: preserve-3d;
}
.leaf-scene div {
  position: absolute;
  top: 0;
  left: 0;
  width: 20px;
  height: 20px;
  display: block;
  background-repeat: no-repeat;
  background-size: 100%;
  -webkit-transform-style: preserve-3d;
          transform-style: preserve-3d;
  -webkit-backface-visibility: visible;
          backface-visibility: visible;
}