Reply To: Adding border bottom to widgets

look up the css in inspect element

and youll see that when you look at http://desimedicos.com/forums/view/latest-topics/

on the recent forum topics widget the id of the widget is #bbp_topics_widget-8 now

so now you would have to also add the custom css

#bbp_topics_widget-8 ul li {
border-bottom: 1px solid #F1F1F1;
}

look for changes like that on each page you have those widgets