Add margin around Google ads

docs/_layouts/default.html

@@ -45,6 +45,11 @@
     </div>
 
     {% include scripts.html %}
+    <style>
+      .google-auto-placed {
+        margin: 2em auto;
+      }
+    </style>
     <script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
     <script>(adsbygoogle = window.adsbygoogle || []).push({});</script>