body {
  background-image: url(snowfall.jpg);
  background-size: cover;
  background-position: center center;
  overflow: hidden;
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100vh;
  position: relative;
}

#container {
  position: absolute;
  top: 0;
  left: -10%;
  right: 0;
  width: 110vw;
  height: 110vh;
  z-index: 1;
}
#container .droplet {
  position: absolute;
  top: -20%;
  background: #fff;
  border-radius: 50%;
}