<h3 class="usa-accordion__heading">
  <button type="button" class="usa-accordion__button" aria-expanded="false" aria-controls="message-length">
    Message length
  </button>
</h3>
<div id="message-length" class="usa-accordion__content usa-prose">
  <p class="usa-body">
    If your message is long then it will
    cost more.
  </p>
  <p class="usa-body">
    See <a class="usa-link" href="{{ url_for('.pricing') }}">pricing</a> for details.
  </p>
</div>
