 </p>
          <pre class="css">
            .titleBar {
              position: fixed;
              left: env(titlebar-area-x, 0);
              top: env(titlebar-area-y, 0);
              width: env(titlebar-area-width, 100%);
              height: env(titlebar-area-height, 40px);
              app-region: drag;
          }
          </pre>
          <pre>
            &lt;div class="titlebar"&gt;
              This is web content in the title bar region!
            &lt;div&gt;
          </pre>
        