https://github.com/NodeBB/NodeBB/issues/5443

templates/partials/topics_list.tpl

@@ -1,7 +1,7 @@
 <ul component="category" class="topic-list" itemscope itemtype="http://www.schema.org/ItemList" data-nextstart="{nextStart}" data-set="{set}">
 	<meta itemprop="itemListOrder" content="descending">
 	<!-- BEGIN topics -->
-	<li component="category/topic" class="row clearfix {function.generateTopicClass}" <!-- IMPORT partials/data/category.tpl -->>
+	<li component="category/topic" class="row clearfix category-item {function.generateTopicClass}" <!-- IMPORT partials/data/category.tpl -->>
 		<meta itemprop="name" content="{function.stripTags, title}">
 
 		<div class="col-md-7 col-sm-9 col-xs-10 content">