Collapsibles are elements that expand when you click on them. You can hide/reveal content back on clicking.
<div class="row">
<div class="collapsible">
<input id="collapsible1" type="checkbox" name="collapsible">
<label for="collapsible1">First</label>
<div class="collapsible-body">
<span>Bacon ipsum dolor sit amet landjaeger sausage brisket, jerky drumstick fatback boudin ball tip turducken...</span>
</div>
</div>
<div class="collapsible">
<input id="collapsible2" type="checkbox" name="collapsible">
<label for="collapsible2">Second</label>
<div class="collapsible-body">
<span>Bacon ipsum dolor sit amet beef venison beef ribs kielbasa. Sausage pig leberkas, t-bone sirloin shoulder bresaola...</span>
</div>
</div>
<div class="collapsible">
<input id="collapsible3" type="checkbox" name="collapsible">
<label for="collapsible3">Third</label>
<div class="collapsible-body">
<span>Bacon ipsum dolor sit amet landjaeger sausage brisket, jerky drumstick fatback boudin ball tip turducken...</span>
</div>
</div>
<div class="collapsible">
<input id="collapsible4" type="checkbox" name="collapsible">
<label for="collapsible4">Fourth</label>
<div class="collapsible-body">
<span>Bacon ipsum dolor sit amet beef venison beef ribs kielbasa. Sausage pig leberkas, t-bone sirloin shoulder bresaola...</span>
</div>
</div>
</div>Use input type="radio" when you want to keep only one element collapsed at a time.
<div class="row">
<div class="collapsible">
<input id="collapsible5" type="radio" name="collapsible">
<label for="collapsible5">First</label>
<div class="collapsible-body">
<span>Bacon ipsum dolor sit amet landjaeger sausage brisket, jerky drumstick fatback boudin ball tip turducken...</span>
</div>
</div>
<div class="collapsible">
<input id="collapsible6" type="radio" name="collapsible">
<label for="collapsible6">Second</label>
<div class="collapsible-body">
<span>Bacon ipsum dolor sit amet beef venison beef ribs kielbasa. Sausage pig leberkas, t-bone sirloin shoulder bresaola...</span>
</div>
</div>
<div class="collapsible">
<input id="collapsible7" type="radio" name="collapsible">
<label for="collapsible7">Third</label>
<div class="collapsible-body">
<span>Bacon ipsum dolor sit amet landjaeger sausage brisket, jerky drumstick fatback boudin ball tip turducken...</span>
</div>
</div>
<div class="collapsible">
<input id="collapsible8" type="radio" name="collapsible">
<label for="collapsible8">Fourth</label>
<div class="collapsible-body">
<span>Bacon ipsum dolor sit amet beef venison beef ribs kielbasa. Sausage pig leberkas, t-bone sirloin shoulder bresaola...</span>
</div>
</div>
</div>