[Sisom]

To which I add, from customer/main/subcategories.tpl:

{elseif !$cat_products && !$subcategories}

{$lng.txt_no_products_in_cat}

{/if}

without a paragraph element - hence there are no tags to apply CSS to!

It should be

{elseif !$cat_products && !$subcategories}

<p>  {$lng.txt_no_products_in_cat} </p>

{/if}