body {
  width: 100%;
  height: 100vh;
  background-color: #000;
  background-image: radial-gradient(circle at top right, rgba(121, 68, 154, 0.13), transparent), radial-gradient(circle at 20% 80%, rgba(41, 196, 255, 0.13), transparent);
}

canvas {
  position: fixed;
  width: 100%;
  height: 100%;
}

a {
  position: absolute;
  bottom: 2vmin;
  right: 2vmin;
  color: rgba(255, 255, 255, 0.2);
  text-decoration: none;
}

a:hover {
  color: #fff;
}