Expand column inside Bootstrap css grid shifts oth

问题:

I have a bootstrap grid that contain an expand component.

My actual problem is that when I expand one column, the other columns get shifted because they are in the same row.

I would like to know How can I make column independs each one to another

expand component

<p>
  <button type="button" class="btn btn-outline-primary" (click)="isCollapsed = !isCollapsed"
          [attr.aria-expanded]="!isCollapsed" aria-controls="collapseExample">
    Toggle
  </button>
</p>
<div id="collapseExample" [ngbCollapse]="isCollapsed">
  <div >
    <div class="">
      You can collapse this card by clicking Toggle
    </div>
  </div>
</div>

app component ( container )

<div class="row">
  <div *ngFor="let card of cards; let index=index" class="col-4 col-sm-4 col-xl-4">
    <app-expend></app-expend>
  </div>
</div>

Here's what I would like to do

Here's what I expect

Here's an example to illustrate my actual problem

回答1:

Is accordion what you need? Check this example, https://getbootstrap.com/docs/4.0/components/collapse/#accordion-example