grav-theme-libretic/templates/modular/form.html.twig

<div class="modular-row contact {{ page.header.class }}">
    <div class="g-grid pure-g-r">
        <div id="listing" class="g-block pure-u-2-3">
            {% include "forms/form.html.twig" %}
        </div>
        <div id="sidebar" class="g-block size-1-3 pure-u-1-3">
            {{ page.content|raw }}
        </div>
    </div>
</div>