    <button slot="footer">Cancel</button>
                  </calcite-flow-item>
                </calcite-flow>
              </calcite-shell-panel>
              <div slot="header">
                <header class="header">
                  <h2 class="heading">My App</h2>
                </header>
              </div>
              <div id="viewDiv"></div>

              <footer slot="footer">Footer</footer>
            </calcite-shell>
          </div>

          <h2>Dark Mode</h2>

          <div class="