adapt devtest to use plain dividers

Author: silverwind

templates/devtest/flex-list.tmpl

@@ -2,7 +2,8 @@
 <link rel="stylesheet" href="{{AssetUrlPrefix}}/css/devtest.css?v={{AssetVersion}}">
 <div class="page-content devtest">
 	<div class="ui container">
-		<h1 class="gt-border-secondary-bottom">Flex List (standalone)</h1>
+		<h1>Flex List (standalone)</h1>
+		<div class="ui divider"></div>
 		<div class="flex-list">
 			<div class="flex-item">
 				<div class="flex-item-leading">
@@ -85,7 +86,7 @@
 			</div>
 		</div>
 
-		<div class="divider gt-my-0"></div>
+		<div class="divider"></div>
 
 		<h1>Flex List (with "ui segment")</h1>
 		<div class="ui attached segment">