{% if rules_flat_columns %}
<colgroup>
  {% if rules_show_selection_column %}
  <col class="nsm-rules-col nsm-rules-col--select">
  {% endif %}
  {% for col in rules_flat_columns %}
  <col class="nsm-rules-col"
       data-col-id="{{ col.col_id }}"
       data-default-width="{{ col.default_width_px }}"
       data-min-width="{{ col.min_width_px }}"
       style="width: {{ col.width_px }}px; min-width: {{ col.min_width_px }}px">
  {% endfor %}
</colgroup>
{% endif %}