dropsea/css/planet.css

.sky {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: url("https://2.bp.blogspot.com/-rE0aDa5rdqY/V1qvWJ9pKQI/AAAAAAAAOes/exbx5tA-7R4CLHzEXShCeOKVFwFhW_I5QCKgB/s1600/night-sky-stars.jpg");
}

.wrapper {
  position: relative;
  width: auto;
}

.planet {
  position: relative;
  height: 100px;
  width: 100px;
  background: #03C1EB;
  border-radius: 50%;
  animation: rotate 8s linear infinite;
  box-shadow: inset 0px 5px 20px 0px rgba(50, 50, 50, 0.96);
}

@keyframes rotate {
  to {
    transform: rotate(360deg);
  }
}

.moon {
  border-radius: 50%;
  margin: -80px;
  width: 20px;
  height: 20px;
  background: #03C1EB;
}

.moon2 {
  border-radius: 50%;
  margin: 100px;
  width: 10px;
  height: 10px;
  background: #03C1EB;
}

@keyframes rotate2 {
  to {
    transform: rotate(360deg);
  }
}

.moon-spinner {
  height: 100px;
  width: 100px;
  position: absolute;
  top: -80px;
  left: 0%;
  border-radius: 50%;
  animation: rotate2 4s linear infinite;
}