How to edit Label's font-size (for dropdowns)?

[eugenefedoto]

http://i.imgur.com/t1S8vyt.png

 

Source code for HTML file:

<label class="attribute_label" for="group_4" style="font-size: 12px;">Select Size </label>

 

Source code for product.tpl that creates the actual code:

<label class="attribute_label" {if $group.group_type != 'color' && $group.group_type != 'radio'}for="group_{$id_attribute_group|intval}"{/if}>{$group.name|escape:'html':'UTF-8'} </label>

 

I can't figure out what is hardcoding the font-size: 12px into the style attribute. I'm assuming it's something from include.min.js that is like $("label").css("font-size", "12px"), but I can't find exactly what I have to edit.