      background: var(--medium-grey);
        color: white;
        display: flex;
        flex-direction: column;
      }

      .grid {
        background-color: var(--canvas-background);
        /* 10px grid, using http://www.patternify.com/ */
        background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAAIElEQVQoU2NkYGBIY2BgmMVAADASUgCTH1WIN6SIDh4AnhABC01te2MAAAAASUVORK5CYII=);
        background-position: 0px 0px;
      }

      .gridPanel {
        background: var