rivet-1.0.x-dev/templates/regions/region--content-bottom.html.twig

{#
Use the Content Bottom region where content should be displayed in a
constrained container below any edge-to-edge regions. Useful for
webforms, post series navigation, or author blurbs.
#}
{% if content %}
  {{ attach_library('rivet/rvt-c-region') }}
  {% apply spaceless %}
  <div class="rvt-c-region rvt-m-top-xl">
    <div class="rvt-c-region__inner {{ content_width }} rvt-prose rvt-flow rvt-m-bottom-xl">
      {{ content }}
    </div>
  </div>
  {% endapply %}
{% endif %}