#universe {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

@keyframes star-move {
  0% {
    left: 100vw;
    opacity: 1;
  }
  100% {
    left: -50px;
    opacity: 0.8;
  }
}

.star0, .star1, .star2, .star3 {
  position: absolute;
  border-radius: 50%;
  background: white;
  will-change: transform, left, opacity;
}
@keyframes star-move {
  from {
    left: 100vw;
    opacity: 1;
  }
  to {
    left: -50px;
    opacity: 0.8;
  }
}
.star0, .star1, .star2, .star3 {
  position: absolute;
  animation-name: star-move;
  animation-timing-function: linear;
  will-change: transform, left, opacity;
}



body {
  background: #ffa17f;
  background: -webkit-linear-gradient(to right, #00223e, #ffa17f);
  background: linear-gradient(to right, #00223e, #ffa17f);
  overflow-x: hidden;
}


.star0 {
  height: 1px;
  width: 1px;
  opacity: 1;
  position: absolute;
}

.star1 {
  height: 2px;
  width: 2px;
  border-radius: 50%;
  opacity: 1;
  position: absolute;
}

.star2 {
  height: 3px;
  width: 3px;
  border-radius: 50%;
  opacity: 1;
  position: absolute;
}

.star3 {
  height: 4px;
  width: 4px;
  border-radius: 50%;
  opacity: 1;
  position: absolute;
}