html,
body {
  width: 100%;
  height: 100%;
}

/* html {
  background: repeating-conic-gradient(#808080 0% 25%, #80808033 0% 50%) 50% /
    20px 20px;
} */

#canvas {
  /* background-color: hotpink; */
  width: 100%;
  height: 100%;
}