<mat-dialog-content class="mat-typography">
  <h4> {{message}} </h4>
</mat-dialog-content>
<mat-dialog-actions style="justify-content: flex-end">
  <button mat-dialog-close mat-stroked-button> Cancel </button>
  <button *ngIf="isDataSpecified" [mat-dialog-close]="callback" mat-raised-button color="primary"> Delete </button>
</mat-dialog-actions>
