#container {
  width: 250px;
  height: 50px;
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  bottom: 0;
  margin: auto;
  opacity: 0;
  animation: fadeIn 1s 1, rotate 10s infinite;
  animation-fill-mode: forwards;
}

.wrap {
  animation: translate 1000ms infinite ease-in-out alternate, zindex 2000ms infinite ease-in-out;
  animation-delay: 0, -2000ms;
  position: absolute;
}

.ball {
  width: 50px;
  height: 50px;
  box-shadow: 0 -5px 0 rgba(0, 0, 0, 0.15) inset;
  background-color: #E3746B;
  border-radius: 50%;
  animation: scale 1000ms infinite ease-in-out alternate;
  animation-delay: -500ms;
  transform: scale(0.5);
  border: 2px solid black;
}

#ball_planet {
  width: 112.5px;
  height: 112.5px;
  box-shadow: 0 -11.25px 0 rgba(0, 0, 0, 0.15) inset;
  background-color: #eee;
  border-radius: 50%;
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  bottom: 0;
  margin: auto;
  animation: none;
  transform: none;
}

.ball:after {
  content: '';
  width: 100%;
  height: 13px;
  background: #eee;
  position: absolute;
  top: 150px;
  border-radius: 50%;
}

#wrap2 {
  animation-delay: -1000ms;
}

#ball2 {
  background-color: #397BF9;
  animation-delay: -1500ms;
}

#wrap3 {
  animation-delay: -1500ms;
}

#ball3 {
  background-color: #F4B400;
  animation-delay: -2000ms;
}

#wrap4 {
  animation-delay: -2500ms;
}

#ball4 {
  background-color: #0F9D58;
  animation-delay: -3000ms;
}

@keyframes translate {
  0% {
    transform: translateX(0) translateY(25px);
  }
  100% {
    transform: translateX(200px) translateY(-25px);
  }
}
@keyframes scale {
  100% {
    transform: scale(1);
  }
}
@keyframes zindex {
  25% {
    z-index: 1;
  }
  75% {
    z-index: -1;
  }
}
@keyframes fadeIn {
  100% {
    opacity: 1;
  }
}