viewerCmp.template.html

      <i class="fas fa-chevron-up"></i>
      <span>
        collapse
      </span>
    </button>
  </div>
</ng-template>

<!-- region tmpl placeholder -->
<ng-template #regionPlaceholderTmpl>
  <div class="placeholder-region-detail bs-border-box ml-15px-n mr-15px-n mat-elevation-z4">
    <span class="text-muted">
      Select a region by clicking on the viewer or search from above
    </span>
  </div>
</ng-template>