pdown-menu-right navbar-dropdown preview-list pb-0" aria-labelledby="notificationDropdown">
          <a class="dropdown-item py-3 border-bottom">
            <p class="mb-0 font-weight-medium float-left">You have 4 new notifications </p>
            <span class="badge badge-pill badge-primary float-right">View all</span>
          </a>
          <a class="dropdown-item preview-item py-3">
            <div class="preview-thumbnail">
              <i class="mdi mdi-alert m-auto text-primary"></i>
           