guacamole/src/main/frontend/src/app/navigation/templates/guacMenu.html

<div class="menu-dropdown" ng-class="{open: menuShown}" ng-click="toggleMenu()">
    <div class="menu-title">{{menuTitle}}</div>
    <div class="menu-indicator"></div>

    <!-- Menu contents -->
    <div class="menu-contents" ng-transclude></div>
</div>