formatting fixes, container overflows

_layouts/post.html

@@ -20,7 +20,7 @@
         <article>
             <div id="content" class="use-ibm">
                 <div id="title">
-                    <h1>{{ page.title }}</h1>
+                    <h2>{{ page.title }}</h2>
                 </div>
                 <div id="date">
                     <p>{{ page.date | date: "%a, %d %b %Y, %r" }}</p>