una/template/designbox_3.html

<!-- Design Box 3 [start]: Content + background -->
<div class="bx-db-container bx-dbc-nopadding bx-def-color-bg-block">
    <div class="bx-db-content bx-clearfix">
            __designbox_content__
    </div>
</div>
<!-- Design Box 3 [ end ] -->