body {
  width: 100vw;
  height: 100vh;

  background: #141414;
}

a-hole {
  position: absolute;
  top: 0;
  left: 0;

  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;

  overflow: hidden;
}

a-hole:before {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 2;

  display: block;
  width: 150%;
  height: 140%;

  background: radial-gradient(ellipse at 50% 55%, transparent 10%, black 50%);
  transform: translate3d(-50%, -50%, 0);

  content: "";
}

a-hole:after {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 5;

  display: block;
  width: 100%;
  height: 100%;

  background: radial-gradient(
    ellipse at 50% 75%,
    #a900ff 20%,
    transparent 75%
  );
  mix-blend-mode: overlay;
  transform: translate3d(-50%, -50%, 0);

  content: "";
}

@keyframes aura-glow {
  0% {
    background-position: 0 100%;
  }
  100% {
    background-position: 0 300%;
  }
}

a-hole .aura {
  position: absolute;
  top: -71.5%;
  left: 50%;
  z-index: 3;

  width: 30%;
  height: 140%;

  background: linear-gradient(
      20deg,
      #00f8f1,
      #ffbd1e20 16.5%,
      #fe848f 33%,
      #fe848f20 49.5%,
      #00f8f1 66%,
      #00f8f160 85.5%,
      #ffbd1e 100%
    )
    0 100% / 100% 200%;
  border-radius: 0 0 100% 100%;
  filter: blur(50px);
  mix-blend-mode: plus-lighter;
  opacity: 0.75;
  transform: translate3d(-50%, 0, 0);

  animation: aura-glow 5s infinite linear;
}

a-hole .overlay {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 10;

  width: 100%;
  height: 100%;

  background: repeating-linear-gradient(
    transparent,
    transparent 1px,
    white 1px,
    white 2px
  );
  mix-blend-mode: overlay;
  opacity: 0.5;
}

a-hole canvas {
  display: block;

  width: 100%;
  height: 100%;
}