message: Removed some html lines
diff: <div>
  <br/>
  - <mat-form-field appearance="fill" *ngIf="randomFixes.length !== 0">
  + <mat-form-field appearance="fill">
  <mat-label>Correct Fix</mat-label>
  <select matNativeControl (change)="changeFix($event)">
  <option value=""></option>
  [selected]="selectedFix === i">Fix {{ i+1 }}</option>
  </select>
  </mat-form-field>
  - <div *ngIf="randomFixes.length !== 0">
  <div *ngFor="let fix of randomFixes; index as i" id="code">
  <div *ngIf="selectedFix === i">
  <td-ngx-text-diff [left]="snippet"
  </div>
  </div>
  </div>
  \ No newline at end of file
  -</div>
  \ No newline at end of file
  