CODE EXAMPLE FOR HTML

bootstrap hide show toggle collapse

<p>
  <a class="btn btn-primary" data-toggle="collapse" href="#collapseExample" role="button" aria-expanded="false" aria-controls="collapseExample">
    Link with href
  </a>
</p>

<div class="collapse" id="collapseExample">
  <div class="card card-body">
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  </div>
</div>