Fix recent posts heading

_layouts/home.html

@@ -4,9 +4,9 @@ home: true
 ---
 
 {% include anchor_headings.html html=content anchorClass="anchor-head" beforeHeading=true h_min=1 h_max=4 %}
-{%- if site.length > 0 -%}
-<h3 class="posts-item-note" aria-label="Recent Posts">Recent Posts</h3>
-{%- endif -%}
+{%- if site.posts != empty -%}
+<h2 aria-label="Recent Posts">Recent Posts</h2>
+<div>
 {%- for post in site.posts limit: site.number_of_posts -%}
 <article class="post-item">
   <span class="post-item-date">{{ post.date | date: "%b %d, %Y" }}</span>
@@ -15,3 +15,5 @@ home: true
   </h4>
 </article>
 {%- endfor -%}
+</div>
+{%- endif -%}