Collapse

These modular elements can be readily used and customized in every layout across pages.

For detail documentation. View Collapse on Bootstrap

Collapse Example

Some placeholder content for the collapse component. This panel is hidden by default but revealed when the user activates the relevant trigger. 
<p>
  <a class="btn btn-dark" data-bs-toggle="collapse" href="#collapseExample" role="button" aria-expanded="false" aria-controls="collapseExample">Link with href</a>
  <button class="btn btn-dark" type="button" data-bs-toggle="collapse" data-bs-target="#collapseExample" aria-expanded="false" aria-controls="collapseExample">
    Button with data-bs-target
  </button>
</p>
<div class="collapse" id="collapseExample">
  <div class="card card-body">
    Some placeholder content for the collapse component. This panel is hidden by default but revealed when the user activates the relevant trigger.
  </div>
</div>
Horizontal Collapse

This is some placeholder content for a horizontal collapse. It's hidden by default and shown when triggered. 
<p>
  <button class="btn btn-dark" type="button" data-bs-toggle="collapse" data-bs-target="#collapseWidthExample" aria-expanded="false" aria-controls="collapseWidthExample"> Toggle width collapse </button>
</p>
<div style="min-height: 120px;">
  <div class="collapse collapse-horizontal" id="collapseWidthExample">
    <div class="card card-body" style="width: 300px;">
      This is some placeholder content for a horizontal collapse. It's hidden by default and shown when triggered.
    </div>
  </div>
</div>
Multiple targets

Some placeholder content for the first collapse component of this multi-collapse example.
Some placeholder content for the second collapse component of this multi-collapse example.
<p><a class="btn btn-dark" data-bs-toggle="collapse" href="#multiCollapseExample1" role="button" aria-expanded="false" aria-controls="multiCollapseExample1">Toggle first element</a>
  <button class="btn btn-dark" type="button" data-bs-toggle="collapse" data-bs-target="#multiCollapseExample2" aria-expanded="false" aria-controls="multiCollapseExample2">Toggle second element</button>
  <button class="btn btn-dark" type="button" data-bs-toggle="collapse" data-bs-target=".multi-collapse" aria-expanded="false" aria-controls="multiCollapseExample1 multiCollapseExample2">Toggle both elements</button>
</p>
<div class="row">
  <div class="col">
    <div style="min-height: 7.5rem;">
      <div class="collapse multi-collapse" id="multiCollapseExample1">
        <div class="card card-body" style="width: 18.75rem;">Some placeholder content for the first collapse component of this multi-collapse example. </div>
      </div>
    </div>
  </div>
  <div class="col">
    <div style="min-height: 7.5rem;">
      <div class="collapse multi-collapse" id="multiCollapseExample2">
        <div class="card card-body" style="width: 18.75rem;">Some placeholder content for the second collapse component of this multi-collapse example.</div>
      </div>
    </div>
  </div>
</div>