<div mat-dialog-content class="text-center">
  {{data}}
  </div>
  <div mat-dialog-actions class="row justify-content-center mt-3">
      
    <button mat-raised-button class="btn mr-2" color="primary" (click)="onConfirm()" >Oui</button>
    <button mat-raised-button class="btn ml-2" cdkFocusInitial color="primary" (click)="onNoClick()">Non</button>
   
  </div>