* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background-color: #000000;
  overflow: hidden;
}

main {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* the canvas *must not* have any border or padding, or mouse coords will be wrong */
#canvas {
  display: block;
  padding: 0;
  border: 0px none;
  visibility: hidden;
  position: absolute;
  height: 100%;
  max-width: fit-content;
  image-rendering: pixelated;
}