* {
  margin: 0;
  padding: 0;
}

:root {
  --twinkle-duration: 4s;
}

.stars-wrapper {
  position: relative;
  pointer-events: none;
  width: 100%;
  height: 100vh;
  background: -webkit-gradient(linear, left top, left bottom, from(#16161d), color-stop(#253b6e), to(#3f73af));
  background: linear-gradient(#16161d, #253b6e, #3f73af);
  overflow: hidden;
}

.stars {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  -webkit-animation: twinkle var(--twinkle-duration) ease-in-out infinite;
  animation: twinkle var(--twinkle-duration) ease-in-out infinite;
}

.stars:nth-child(2) {
  -webkit-animation-delay: calc(var(--twinkle-duration) * -0.33);
  animation-delay: calc(var(--twinkle-duration) * -0.33);
}

.stars:nth-child(3) {
  -webkit-animation-delay: calc(var(--twinkle-duration) * -0.66);
  animation-delay: calc(var(--twinkle-duration) * -0.66);
}

@-webkit-keyframes twinkle {
  25% {
    opacity: 0;
  }
}

@keyframes twinkle {
  25% {
    opacity: 0;
  }
}

.star {
  fill: white;
}

.star:nth-child(3n) {
  opacity: 0.8;
}

.star:nth-child(7n) {
  opacity: 0.6;
}

.star:nth-child(13n) {
  opacity: 0.4;
}

.star:nth-child(19n) {
  opacity: 0.2;
}

.comet {
  -webkit-transform-origin: center center;
  transform-origin: center center;
  -webkit-animation: comet 10s linear infinite;
  animation: comet 10s linear infinite;
}

@-webkit-keyframes comet {

  0%,
  40% {
    -webkit-transform: translateX(0);
    transform: translateX(0);
    opacity: 0;
  }

  50% {
    opacity: 1;
  }

  60%,
  100% {
    -webkit-transform: translateX(-100vmax);
    transform: translateX(-100vmax);
    opacity: 0;
  }
}

@keyframes comet {

  0%,
  40% {
    -webkit-transform: translateX(0);
    transform: translateX(0);
    opacity: 0;
  }

  50% {
    opacity: 1;
  }

  60%,
  100% {
    -webkit-transform: translateX(-100vmax);
    transform: translateX(-100vmax);
    opacity: 0;
  }
}

.comet-b {
  -webkit-animation-delay: -3.3s;
  animation-delay: -3.3s;
}

.comet-c {
  -webkit-animation-delay: -5s;
  animation-delay: -5s;
}