/*html,body{
    width: 100%;
    height: 100%;
    background-image: radial-gradient(#021027, #000000);
    position: absolute;
    z-index: -2;
}*/

#canvas {
  display: block;
  width: 100%;
  height: 100%;
  margin: 0 auto;
  position: fixed;
  z-index: -1;
  background-image: radial-gradient(#021027, #000000);
}
/*#canvas {
  display: block;
  width: 100%;
  height: 100%;
  margin: 0 auto;
  position: absolute;
  z-index: -1;
}*/