html, body {
  margin: 0;
  padding: 0;
    background: #000;
}
canvas {
  display: block;
  image-rendering: optimizeSpeed;             /*                     */
  image-rendering: -moz-crisp-edges;          /* Firefox             */
  image-rendering: -o-crisp-edges;            /* Opera               */
  image-rendering: -webkit-optimize-contrast; /* Chrome (and Safari) */
  image-rendering: pixelated;                 /* Chrome as of 2019   */
  image-rendering: optimize-contrast;         /* CSS3 Proposed       */
  -ms-interpolation-mode: nearest-neighbor;   /* IE8+                */
}

*{
  margin: 0;
  padding: 0;
}