body {
 margin: 0;
 padding: 0;
}

/*canvas {
  display: block;
} */
/* hide paragraph note, but available to screen-readers 
position: absolute; removes it from the normal document flow (so it won’t affect layout).

left: -9999px; moves it way off the visible screen—far enough that no one will see it, but it still exists in the DOM. */
#animation-description {
  position: absolute;
  left: -9999px;
}