feat: Update layouts

Author: MichaelCurrin

_layouts/listing.html

@@ -1,13 +1,30 @@
 ---
-layout: page
+layout: default
 ---
 
-<h3>Topics</h3>
+<article class="post">
 
-{% include list-sections.html %}
+    <header class="post-header">
+        <h1 class="post-title">{{ page.title | escape }}</h1>
+        {% if page.description %}
+            <h2>{{ page.description | escape }}<h2>
+        {% endif %}
+    </header>
 
-<h3>Pages</h3>
+    {% include breadcrumbs.html %}
 
-{% include list-pages.html %}
+    <h2>Topics</h2>
 
-{{ content }}
+    {% include list-sections.html %}
+
+    <h2>Pages</h2>
+
+    {% include list-pages.html %}
+
+    <br>
+
+    <div class="post-content">
+        {{ content }}
+    </div>
+
+</article>

_layouts/page.html

@@ -7,6 +7,9 @@
 
     <header class="post-header">
         <h1 class="post-title">{{ page.title | escape }}</h1>
+        {% if page.description %}
+            <h2>{{ page.description | escape }}<h2>
+        {% endif %}
     </header>
 
     {% include breadcrumbs.html %}