Accordion

<div class="accordion" id="accordionExample">
  <div class="accordion-item">
    <h2 class="accordion-header">
      <button class="accordion-button" type="button" data-bs-toggle="collapse" data-bs-target="#c1">Item #1</button>
    </h2>
    <div id="c1" class="accordion-collapse collapse show" data-bs-parent="#accordionExample">
      <div class="accordion-body">Contenido del primer ítem.</div>
    </div>
  </div>
  <div class="accordion-item">
    <h2 class="accordion-header">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#c2">Item #2</button>
    </h2>
    <div id="c2" class="accordion-collapse collapse" data-bs-parent="#accordionExample">
      <div class="accordion-body">Contenido del segundo ítem.</div>
    </div>
  </div>
</div>