#space {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: -1;
    overflow: hidden
}

.space {
    background: rgba(0, 0, 0, 0.1) center / 200px 200px round;
}

#stars1, #stars2, #stars3 {
  position: absolute;
  inset: 0;
  background-repeat: repeat;
}

#stars1 {
    animation: space 180s ease-in-out infinite;
    animation-delay: -30s;
    background-image:
    radial-gradient(
    1px 1px at 25px 5px,
    white,
    rgba(255, 255, 255, 0)
    ),
    radial-gradient(
    1px 1px at 50px 25px,
    white,
    rgba(255, 255, 255, 0)
    ),
    radial-gradient(
    1px 1px at 125px 20px,
    white,
    rgba(255, 255, 255, 0)
    ),
    radial-gradient(
    1.5px 1.5px at 50px 75px,
    white,
    rgba(255, 255, 255, 0)
    ),
    radial-gradient(
    2px 2px at 15px 125px,
    white,
    rgba(255, 255, 255, 0)
    ),
    radial-gradient(
    2.5px 2.5px at 110px 80px,
    white,
    rgba(255, 255, 255, 0)
    );
}

#stars2 {
    animation: space 240s ease-in-out infinite;
    animation-delay: -120s;
    background-image:
    radial-gradient(
    1px 1px at 75px 125px,
    white,
    rgba(255, 255, 255, 0)
    ),
    radial-gradient(
    1px 1px at 100px 75px,
    white,
    rgba(255, 255, 255, 0)
    ),
    radial-gradient(
    1.5px 1.5px at 199px 100px,
    white,
    rgba(255, 255, 255, 0)
    ),
    radial-gradient(
    2px 2px at 20px 50px,
    white,
    rgba(255, 255, 255, 0)
    ),
    radial-gradient(
    2.5px 2.5px at 100px 5px,
    white,
    rgba(255, 255, 255, 0)
    ),
    radial-gradient(
    2.5px 2.5px at 5px 5px,
    white,
    rgba(255, 255, 255, 0)
    );
}

#stars3 {
    animation: space 300s ease-in-out infinite;
    animation-delay: -240s;
    background-image:
    radial-gradient(
    1px 1px at 10px 10px,
    white,
    rgba(255, 255, 255, 0)
    ),
    radial-gradient(
    1px 1px at 150px 150px,
    white,
    rgba(255, 255, 255, 0)
    ),
    radial-gradient(
    1.5px 1.5px at 60px 170px,
    white,
    rgba(255, 255, 255, 0)
    ),
    radial-gradient(
    1.5px 1.5px at 175px 180px,
    white,
    rgba(255, 255, 255, 0)
    ),
    radial-gradient(
    2px 2px at 195px 95px,
    white,
    rgba(255, 255, 255, 0)
    ),
    radial-gradient(
    2.5px 2.5px at 95px 145px,
    white,
    rgba(255, 255, 255, 0)
    );
}

@keyframes space {
  40% {
    opacity: 0.75;
  }
  50% {
    opacity: 0.25;
  }
  60% {
    opacity: 0.75;
  }
  100% {
    transform: rotate(360deg);
  }
}