{%- assign has_sub_categories = false -%}

{%- for cat in talk.categories -%}

{%- if cat != main_cat -%}
  {%- assign has_sub_categories = true -%}
  <span class="badge badge-light text-reset font-weight-normal">{{ cat }}</span>&nbsp;
{%- endif -%}

{%- endfor -%}