Merge upstream

landing.bryanroessler.com/_layouts/default.html

@@ -4,7 +4,7 @@ layout: base
 
 <div class="intro-header"></div>
 
-<div role="main" class="{% if page.full-width %} container-fluid {% else %} container-md {% endif %}">
+<main class="{% if page.full-width %} container-fluid {% else %} container-md {% endif %}">
   {% if page.before-content %}
     <div class="before-content">
       {% for file in page.before-content %}
@@ -22,4 +22,4 @@ layout: base
       {% endfor %}
     </div>
   {% endif %}
-</div>
+</main>