
    <div class="open">
      <nz-float-button-group
        nzIcon="customer-service"
        [nzOpen]="isOpen"
        nzType="primary"
        nzTrigger="hover"
        style="right: 24px"
      >
        <nz-float-button></nz-float-button>
        <nz-float-button nzIcon="comment"></nz-float-button>
      </nz-float-button-group>
      <nz-switch [(ngModel)]="isOpen"></nz-switch>
    </div>
  