<div *ngIf="user">
  <div class="page-header">
    <h2>{{user.name}}</h2>
  </div>
  <ul class="list-group">
    <li class="list-group-item">Username: {{user.username}}</li>
    <li class="list-group-item">Email: {{user.email}}</li>
  </ul>
 </div>