<mat-toolbar>
  <a href=""><span>Aktienbot</span></a>
  <span class="example-spacer"></span>
  <button
    mat-icon-button
    aria-label="Example icon-button with heart icon"
    routerLink="/profile"
  >
    <mat-icon>account_circle</mat-icon>
  </button>
  <button
    mat-icon-button
    class="example-icon favorite-icon"
    routerLink="/settings"
  >
    <mat-icon>ballot</mat-icon>
  </button>
  <button
    mat-icon-button
    aria-label="Example icon-button with heart icon"
    (click)="logout()"
  >
    <mat-icon>logout</mat-icon>
  </button>
</mat-toolbar>
