devel_wizard-2.x-dev/templates/spell/layout/template.twig.twig

{% verbatim -%}
{% if content %}
  <div {{ attributes }}>
  {% if content.first -%}
    <div {{ region_attributes.first.addClass('first-region') }}>{{ content.first }}</div>
  {%- endif %}
  {% if content.second -%}
    <div {{ region_attributes.second.addClass('second-region') }}>{{ content.second }}</div>
  {%- endif %}
  </div>
{% endif %}
{%- endverbatim %}