@keyframes sparkle {
  50% {
    opacity: 0.2;
    transform: scale(0.5);
    box-shadow: 0px 0px 10px 3px rgba(255, 255, 255, 0.368627451);
  }
  50% {
    opacity: 0.6;
    transform: scale(1);
    box-shadow: 0px 0px 10px 3px rgb(255, 228, 141);
  }
  100% {
    opacity: 0;
    transform: scale(1.5);
    box-shadow: 0px 0px 10px 3px rgba(255, 255, 255, 0.368627451);
  }
}

.content-stars {
    position: fixed;
    width: 100%;
    height: 100%;
    top:0;
    left:0;
    z-index: 1;
}

.star {
  position: absolute;
  width: 3px;
  height: 3px;
  opacity: 0.5;
  background-color: rgb(255, 228, 141);
  border-radius: 50%;
  opacity: 0;
  animation: sparkle 2s infinite alternate;
}