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html

css

@import url("https://cdn.jsdelivr.net/gh/alphardex/aqua.css@master/dist/aqua.min.css");
body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: radial-gradient(ellipse at bottom, #0d1d31 0%, #0c0d13 100%);
  overflow: hidden;
}

.stars {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 120%;
  transform: rotate(-45deg);
}

.star {
  --star-color: var(--primary-color);
  --star-tail-length: 6em;
  --star-tail-height: 2px;
  --star-width: calc(var(--star-tail-length) / 6);
  --fall-duration: 9s;
  --tail-fade-duration: var(--fall-duration);
  position: absolute;
  top: var(--top-offset);
  left: 0;
  width: var(--star-tail-length);
  height: var(--star-tail-height);
  color: var(--star-color);
  background: linear-gradient(45deg, currentColor, transparent);
  border-radius: 50%;
  filter: drop-shadow(0 0 6px currentColor);
  transform: translate3d(104em, 0, 0);
  animation: fall var(--fall-duration) var(--fall-delay) linear infinite, tail-fade var(--tail-fade-duration) var(--fall-delay) ease-out infinite;
}
@media screen and (max-width: 750px) {
  .star {
    animation: fall var(--fall-duration) var(--fall-delay) linear infinite;
  }
}
.star:nth-child(1) {
  --star-tail-length: 6.64em;
  --top-offset: 42.98vh;
  --fall-duration: 10.473s;
  --fall-delay: 4.41s;
}
.star:nth-child(2) {
  --star-tail-length: 6.44em;
  --top-offset: 31.36vh;
  --fall-duration: 8.426s;
  --fall-delay: 8.298s;
}
.star:nth-child(3) {
  --star-tail-length: 5.97em;
  --top-offset: 77.97vh;
  --fall-duration: 9.542s;
  --fall-delay: 5.036s;
}
.star:nth-child(4) {
  --star-tail-length: 7.08em;
  --top-offset: 22.85vh;
  --fall-duration: 11.552s;
  --fall-delay: 4.978s;
}
.star:nth-child(5) {
  --star-tail-length: 5.13em;
  --top-offset: 76.18vh;
  --fall-duration: 11.491s;
  --fall-delay: 1.465s;
}
.star:nth-child(6) {
  --star-tail-length: 6.08em;
  --top-offset: 31.28vh;
  --fall-duration: 7.516s;
  --fall-delay: 9.249s;
}
.star:nth-child(7) {
  --star-tail-length: 5.14em;
  --top-offset: 11.34vh;
  --fall-duration: 6.055s;
  --fall-delay: 6.982s;
}
.star:nth-child(8) {
  --star-tail-length: 6.44em;
  --top-offset: 10.92vh;
  --fall-duration: 11.854s;
  --fall-delay: 7.17s;
}
.star:nth-child(9) {
  --star-tail-length: 6.29em;
  --top-offset: 56.37vh;
  --fall-duration: 8.574s;
  --fall-delay: 1.25s;
}
.star:nth-child(10) {
  --star-tail-length: 5.43em;
  --top-offset: 48.01vh;
  --fall-duration: 6.524s;
  --fall-delay: 7.259s;
}
.star:nth-child(11) {
  --star-tail-length: 6.2em;
  --top-offset: 36.36vh;
  --fall-duration: 6.403s;
  --fall-delay: 5.945s;
}
.star:nth-child(12) {
  --star-tail-length: 7.28em;
  --top-offset: 50.43vh;
  --fall-duration: 8.392s;
  --fall-delay: 1.598s;
}
.star:nth-child(13) {
  --star-tail-length: 7.18em;
  --top-offset: 69.83vh;
  --fall-duration: 9.764s;
  --fall-delay: 8.539s;
}
.star:nth-child(14) {
  --star-tail-length: 5.43em;
  --top-offset: 63.38vh;
  --fall-duration: 8.819s;
  --fall-delay: 7.592s;
}
.star:nth-child(15) {
  --star-tail-length: 6.57em;
  --top-offset: 6.09vh;
  --fall-duration: 7.966s;
  --fall-delay: 4.678s;
}
.star:nth-child(16) {
  --star-tail-length: 6.41em;
  --top-offset: 68.14vh;
  --fall-duration: 8.314s;
  --fall-delay: 8.052s;
}
.star:nth-child(17) {
  --star-tail-length: 6.35em;
  --top-offset: 72.69vh;
  --fall-duration: 9.259s;
  --fall-delay: 8.401s;
}
.star:nth-child(18) {
  --star-tail-length: 7.09em;
  --top-offset: 93.62vh;
  --fall-duration: 9.66s;
  --fall-delay: 5.856s;
}
.star:nth-child(19) {
  --star-tail-length: 6.2em;
  --top-offset: 83.23vh;
  --fall-duration: 6.602s;
  --fall-delay: 9.636s;
}
.star:nth-child(20) {
  --star-tail-length: 6.98em;
  --top-offset: 77.95vh;
  --fall-duration: 9.316s;
  --fall-delay: 0.282s;
}
.star:nth-child(21) {
  --star-tail-length: 5.19em;
  --top-offset: 7.67vh;
  --fall-duration: 10.172s;
  --fall-delay: 6.937s;
}
.star:nth-child(22) {
  --star-tail-length: 5.46em;
  --top-offset: 10.76vh;
  --fall-duration: 7.552s;
  --fall-delay: 9.685s;
}
.star:nth-child(23) {
  --star-tail-length: 5.69em;
  --top-offset: 47.65vh;
  --fall-duration: 6.183s;
  --fall-delay: 0.1s;
}
.star:nth-child(24) {
  --star-tail-length: 7.11em;
  --top-offset: 12.07vh;
  --fall-duration: 6.651s;
  --fall-delay: 1.602s;
}
.star:nth-child(25) {
  --star-tail-length: 5.43em;
  --top-offset: 32.41vh;
  --fall-duration: 6.741s;
  --fall-delay: 0.948s;
}
.star:nth-child(26) {
  --star-tail-length: 6.29em;
  --top-offset: 15.65vh;
  --fall-duration: 10.064s;
  --fall-delay: 5.51s;
}
.star:nth-child(27) {
  --star-tail-length: 7.11em;
  --top-offset: 72.41vh;
  --fall-duration: 7.54s;
  --fall-delay: 2.65s;
}
.star:nth-child(28) {
  --star-tail-length: 5.9em;
  --top-offset: 0.44vh;
  --fall-duration: 11.548s;
  --fall-delay: 6.974s;
}
.star:nth-child(29) {
  --star-tail-length: 6.78em;
  --top-offset: 6.04vh;
  --fall-duration: 11.426s;
  --fall-delay: 4.632s;
}
.star:nth-child(30) {
  --star-tail-length: 5.59em;
  --top-offset: 14.41vh;
  --fall-duration: 6.106s;
  --fall-delay: 2.757s;
}
.star:nth-child(31) {
  --star-tail-length: 6.86em;
  --top-offset: 99.43vh;
  --fall-duration: 11.127s;
  --fall-delay: 6.387s;
}
.star:nth-child(32) {
  --star-tail-length: 5.53em;
  --top-offset: 64.52vh;
  --fall-duration: 11.904s;
  --fall-delay: 9.696s;
}
.star:nth-child(33) {
  --star-tail-length: 7.3em;
  --top-offset: 69.65vh;
  --fall-duration: 6.002s;
  --fall-delay: 5.351s;
}
.star:nth-child(34) {
  --star-tail-length: 5.33em;
  --top-offset: 20.39vh;
  --fall-duration: 9.079s;
  --fall-delay: 3.014s;
}
.star:nth-child(35) {
  --star-tail-length: 5.02em;
  --top-offset: 76.32vh;
  --fall-duration: 8.372s;
  --fall-delay: 4.655s;
}
.star:nth-child(36) {
  --star-tail-length: 6.24em;
  --top-offset: 96.66vh;
  --fall-duration: 10.832s;
  --fall-delay: 1.519s;
}
.star:nth-child(37) {
  --star-tail-length: 5.77em;
  --top-offset: 71.05vh;
  --fall-duration: 7.565s;
  --fall-delay: 3.191s;
}
.star:nth-child(38) {
  --star-tail-length: 5.14em;
  --top-offset: 37.19vh;
  --fall-duration: 8.881s;
  --fall-delay: 8.507s;
}
.star:nth-child(39) {
  --star-tail-length: 6.43em;
  --top-offset: 65.42vh;
  --fall-duration: 8.281s;
  --fall-delay: 4.613s;
}
.star:nth-child(40) {
  --star-tail-length: 6.76em;
  --top-offset: 67.57vh;
  --fall-duration: 11.213s;
  --fall-delay: 6.753s;
}
.star:nth-child(41) {
  --star-tail-length: 6.89em;
  --top-offset: 54.49vh;
  --fall-duration: 11.399s;
  --fall-delay: 0.085s;
}
.star:nth-child(42) {
  --star-tail-length: 6.59em;
  --top-offset: 42.77vh;
  --fall-duration: 10.621s;
  --fall-delay: 1.953s;
}
.star:nth-child(43) {
  --star-tail-length: 5.89em;
  --top-offset: 14.57vh;
  --fall-duration: 11.082s;
  --fall-delay: 5.919s;
}
.star:nth-child(44) {
  --star-tail-length: 6.23em;
  --top-offset: 18.74vh;
  --fall-duration: 11.055s;
  --fall-delay: 2.949s;
}
.star:nth-child(45) {
  --star-tail-length: 6.16em;
  --top-offset: 52.85vh;
  --fall-duration: 7.317s;
  --fall-delay: 1.306s;
}
.star:nth-child(46) {
  --star-tail-length: 5.15em;
  --top-offset: 6.44vh;
  --fall-duration: 9.585s;
  --fall-delay: 3.725s;
}
.star:nth-child(47) {
  --star-tail-length: 7.27em;
  --top-offset: 73.33vh;
  --fall-duration: 7.472s;
  --fall-delay: 2.424s;
}
.star:nth-child(48) {
  --star-tail-length: 5.04em;
  --top-offset: 45.62vh;
  --fall-duration: 10.851s;
  --fall-delay: 3.59s;
}
.star:nth-child(49) {
  --star-tail-length: 7.47em;
  --top-offset: 62.99vh;
  --fall-duration: 8.465s;
  --fall-delay: 1.442s;
}
.star:nth-child(50) {
  --star-tail-length: 6.52em;
  --top-offset: 79vh;
  --fall-duration: 7.398s;
  --fall-delay: 8.222s;
}
.star::before, .star::after {
  position: absolute;
  content: '';
  top: 0;
  left: calc(var(--star-width) / -2);
  width: var(--star-width);
  height: 100%;
  background: linear-gradient(45deg, transparent, currentColor, transparent);
  border-radius: inherit;
  animation: blink 2s linear infinite;
}
.star::before {
  transform: rotate(45deg);
}
.star::after {
  transform: rotate(-45deg);
}

@keyframes fall {
  to {
    transform: translate3d(-30em, 0, 0);
  }
}
@keyframes tail-fade {
  0%, 50% {
    width: var(--star-tail-length);
    opacity: 1;
  }
  70%, 80% {
    width: 0;
    opacity: 0.6;
  }
  100% {
    width: 0;
    opacity: 0;
  }
}
@keyframes blink {
  50% {
    opacity: 0.6;
  }
}

JavaScript

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