scheme: light dark;
      }
      html, body {
        margin: 0;      /* remove default margin */
        height: 100%;   /* make body fill the browser window */
        place-content: center center;
      }
      /* Display the canvas as a centered element floating over the page content */
      canvas {
        width: 600px;
        height: 600px;
        max-width: 100%;
        display: block;
        top: 0px;
        left: 0;
        right: 0;
        margin-inline: auto;
        position: absolute;
