<div *ngFor="let course$ of sector$.courses; let j=index; let isOdd2=odd; let isEven2=even" [class.oddin]="isOdd2" [class.evenin]="isEven2" [hidden]="i !== sectorActive">
<div class="row">
<div *ngFor="let course$ of sector$.get('courses'); let j=index; let isOdd2=odd; let isEven2=even" [class.oddin]="isOdd2" [class.evenin]="isEven2" [hidden]="i !== sectorActive">