updata

projects/textbook/src/app/comp-nav/comp-nav.component.html

@@ -16,7 +16,7 @@
       mat-icon-button
       nzType="primary"
       nz-popover
-      nzPopoverTitle="操作"
+      nzPopoverTitle=""
       [(nzPopoverVisible)]="visible"
       (nzPopoverVisibleChange)="change($event)"
       nzPopoverTrigger="click"