una/template/layout_1_column.html

<!-- layout 1 column [ start ] -->
<div id="__page_id__" class="bx-layout-wrapper bx-layout-1-column bx-layout-column-fullwidth">
    <bx_include_auto:_row_1_column.html />
    <bx_include_auto:_row_1_column_dump.html />
</div>
<!-- layout 1 column [  end  ] -->