Accordion

Accordions are used to toggle sections of content, this component uses the details and summary elements. Add the open attribute to details to have it expanded by default.

Sample (open by default)

Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.

Sample

Lorem Ipsum is simply dummy text of the printing and typesetting industry...

<div class="ch-accordion">
  <details open>
    <summary>Sample (open by default)</summary>
    <div class="ch-accordion__content">
      <p class="ch-mb--0">
        Lorem Ipsum is simply dummy text of the printing and typesetting
        industry...
      </p>
    </div>
  </details>
  <details>
    <summary>Sample</summary>
    <div class="ch-accordion__content">
      <p class="ch-mb--0">
        Lorem Ipsum is simply dummy text of the printing and typesetting
        industry...
      </p>
    </div>
  </details>
</div>

Accordions aren't supported natively in Internet Explorer 11, so you'll need to polyfill the opening/closing functionality.