html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: #fff;
  overflow: hidden;
}
/* Center the view on the drawing. The sketch renders at a native 3000x3000
   with the turtle starting at the centre; this space-filling piece grows out
   from there, so we scale the (square) canvas down and centre it so the
   developing pattern sits in view when embedded. */
body {
  display: flex;
  align-items: center;
  justify-content: center;
}
canvas {
  display: block;
  transform: scale(0.6);
  transform-origin: center center;
}