Use semantic markup — header and article tags — in HTML view.

NetNewsWire/MainWindow/Detail/template.html

@@ -1,12 +1,14 @@
-<div class="headerContainer">
+<header class="headerContainer">
 	<table cellpadding=0 cellspacing=0 border=0 class="headerTable">
 	<tr>
 		<td class="header leftAlign"><span class="feedlink">[[feedlink]]</span><br />[[byline]]</td>
 		[[avatars]]
 	</tr>
-</table>
-</div>
+	</table>
+</header>
+
+<article>
 <div class="articleTitle"><h1>[[title]]</h1></div>
 <div class="articleDateline">[[date_medium]]</div>
 <div class="articleBody">[[body]]</div>
-
+</article>