s="ui-basic">
              <i class="menu-icon mdi mdi-floor-plan"></i>
              <span class="menu-title">UI Elements</span>
              <i class="menu-arrow"></i> 
            </a>
            <div class="collapse" id="ui-basic">
              <ul class="nav flex-column sub-menu">
                <li class="nav-item"> <a class="nav-link" href="/buttons.html">Buttons</a></li>
                <li class="nav-item"> <a class="nav-link" href="/dropdowns.html">Dropdowns</a></li>
                <li class