* {
  box-sizing: border-box;
}

html, body, #main {
  height: 100%;
  overflow-x: hidden;
  background-color: #000033;
  background: linear-gradient(to top, #00008B, #000033);
}

#main {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#moon {
  position: absolute;
  top: 50px;
  width: 200px;
  height: 200px;
  background-color: #F2F2F2;
  background: linear-gradient(to right, #B3B3B3 20%, #F2F2F2 80%);
  border-radius: 100px;
  box-shadow: 0 0 60px 50px rgba(0, 0, 200, 0.4);
  opacity: 1;
  z-index: 2;
}

.cloud {
  position: absolute;
  width: 300px;
  height: 90px;
  background-color: #EEEEEE;
  border-radius: 50px;
  opacity: .8;
  box-shadow: 0 0 50px 60px #eeeeee;
  top: 140px;
  left: 270px;
  z-index: 3;
  animation: moveCloud 100s infinite linear;
}

.cloud-part {
  width: 100px;
  height: 40px;
  background-color: #EEEEEE;
  border-radius: 50px;
  box-shadow: 0 0 50px 60px #eeeeee;
}

.part1 {
  margin-left: 270px;
  margin-top: 40px;
}

.part2 {
  margin-top: -140px;
  margin-left: 20px;
}

#anotherCloud.cloud {
  top: 250px;
  animation-duration: 50s;
}
#anotherCloud.cloud .cloud-part.part1 {
  margin-left: 230px;
  margin-top: 60px;
}

.star {
  position: absolute;
  width: 2px;
  height: 2px;
  border-radius: 1px;
  background-color: white;
  z-index: 1;
}

#starCount {
  color: white;
  position: absolute;
}

@keyframes moveCloud {
  from {
    left: -500px;
  }
  to {
    left: 1500px;
  }
}