itlebar area. </div></div></div><div class="qm-api-description"><div class="qm-html-paragraph">The titlebar container. The structure must follow this hierarchy to allow the mobile responsiveness to work correctly. </div></div><div class="qm-api-group qm-api-class-group"><div class="qm-api-group-header qm-api-class-group-header qm-header-font">Classes</div><div class="qm-api-item qm-api-class qm-api-collapsible"><div class="qm-api-collapsible-heading"><div class="qm-api-collapsible-toggle"><i class="qm-api-c