
    <div class="tooltip">
      <nz-float-button
        style="bottom: 108px"
        nz-tooltip
        nzTooltipTitle="Documents"
        nzTooltipPlacement="top"
        nzTooltipColor="blue"
      ></nz-float-button>
      <nz-float-button nz-tooltip [nzTooltipTitle]="titleTemplate"></nz-float-button>
      <ng-template #titleTemplate>
        <div>Documents</div>
      </ng-template>
    </div>
  