diff --git a/pelican/themes/simple/templates/article.html b/pelican/themes/simple/templates/article.html
index f85c7410..6dd0d967 100644
--- a/pelican/themes/simple/templates/article.html
+++ b/pelican/themes/simple/templates/article.html
@@ -22,7 +22,6 @@
 {% endblock %}
 
 {% block content %}
-<section id="content" class="body">
   <header>
     <h1 class="entry-title">
       <a href="{{ SITEURL }}/{{ article.url }}" rel="bookmark"
@@ -60,8 +59,7 @@
     </div>
     {% endif %}
   </footer><!-- /.post-info -->
-  <div class="entry-content">
+  <article>
     {{ article.content }}
-  </div><!-- /.entry-content -->
-</section>
+  </article>
 {% endblock %}
diff --git a/pelican/themes/simple/templates/base.html b/pelican/themes/simple/templates/base.html
index 2c17dbfb..b1ea57da 100644
--- a/pelican/themes/simple/templates/base.html
+++ b/pelican/themes/simple/templates/base.html
@@ -51,8 +51,10 @@
           {% endfor %}
         {% endif %}
         </ul></nav><!-- /#menu -->
+        <main>
         {% block content %}
         {% endblock %}
+        </main>
         <footer id="contentinfo" class="body">
                 <address id="about" class="vcard body">
                 Proudly powered by <a href="https://getpelican.com/">Pelican</a>,