<li class="dropdown navbar-top-links mr-4" ngbDropdown>
    <a role="button" class="dropdown-toggle" ngbDropdownToggle>
      <fa-icon [icon]="faChartBar"></fa-icon> Spectra <fa-icon [icon]="faCaretDown"></fa-icon>
    </a>

    <ul class="dropdown-menu" ngbDropdownMenu>
        <li><a ngbDropdownItem data-toggle="collapse" data-target=".navbar-collapse.show" [routerLink]="['/spectra/search']">Search Spectra</a></li>
        <li><a ngbDropdownItem data-toggle="collapse" data-target=".navbar-collapse.show" (