border changes from zero to two pixels and padding is reduced by two pixels.
                When an element loses focus, its border changes from two pixels to two and padding is increased by two pixels.
              </li>
            </ul>
          </li>
          <li>
            To ensure the inline SVG graphic used for the arrow in the open button has sufficient contrast with the background when high contrast settings change the color of text content, CSS <code>forced-color-adjust</code> is set to <co