diff --git a/source/_layouts/has_complimentary.liquid b/source/_layouts/has_complimentary.liquid
index 60b28af..2a9c66e 100644
--- a/source/_layouts/has_complimentary.liquid
+++ b/source/_layouts/has_complimentary.liquid
@@ -3,25 +3,32 @@ layout: base
 ---
 
 <div class="sl-l-large-holy-grail">
-    <div class="sl-l-large-holy-grail__body">
-        <div class="sl-l-large-holy-grail__main">
-            <div class="sl-l-container sl-l-container--small">
-                <div class="sl-c-introduction">
-                    {{ introduction}}
-                </div>
-                
-                {{ content | typogr  }}
-            </div>
-        </div>
-            
-        {% if complementary_content %}
-        <div class="sl-l-large-holy-grail__complementary">
-                {% if complementary_content_nav %}<nav aria-label={{ complementary_content_aria_label }} class="sl-c-list-navigation-wrapper">{% endif %}
-                    {% markdown %}
-                        {{ complementary_content }}
-                    {% endmarkdown %}
-                {% if complementary_content_nav %}</nav>{% endif %}
-        </div>
+  <div class="sl-l-large-holy-grail__body">
+    <div class="sl-l-large-holy-grail__main">
+      <div class="sl-l-container sl-l-container--small">
+        {% if before_introduction_include %}
+          {% include before_introduction_include %}
         {% endif %}
+        <div class="sl-c-introduction">
+          {{ introduction }}
+        </div>
+
+        {{ content | typogr }}
+      </div>
     </div>
-</div>
\ No newline at end of file
+
+    {% if complementary_content %}
+      <div class="sl-l-large-holy-grail__complementary">
+        {% if complementary_content_nav %}
+          <nav aria-label={{ complementary_content_aria_label }} class="sl-c-list-navigation-wrapper">
+          {% endif %}
+          {% markdown %}
+            {{ complementary_content }}
+          {% endmarkdown %}
+          {% if complementary_content_nav %}
+          </nav>
+        {% endif %}
+      </div>
+    {% endif %}
+  </div>
+</div>
diff --git a/source/community.md b/source/community.md
index 2d2861d..540d947 100644
--- a/source/community.md
+++ b/source/community.md
@@ -9,16 +9,16 @@ complementary_content: |-
 
   ## Resources
 
-  ### [Jump Start Sass](https://amzn.to/2LKF0uR) 
+  ### [Jump Start Sass](https://amzn.to/2LKF0uR)
   by Hugo Giraudel and Miriam Suzanne
 
-  ### [Pragmatic Guide to Sass 3: Tame the Modern Style Sheet](https://amzn.to/2LEwXiZ) 
+  ### [Pragmatic Guide to Sass 3: Tame the Modern Style Sheet](https://amzn.to/2LEwXiZ)
   by Hampton Lintorn Catlin and Michael Lintorn Catlin
 
-  ### [Sass for Web Designers](https://amzn.to/2RkIVU3) 
+  ### [Sass for Web Designers](https://amzn.to/2RkIVU3)
   by Dan Cederholm
 
-  ### [Sass and Compass in Action](https://amzn.to/2RjAQz7) 
+  ### [Sass and Compass in Action](https://amzn.to/2RjAQz7)
   by Wynn Netherland, Natalie Weizenbaum, Chris Eppstein, Brandon Mathis
 complementary_content_nav: True
 complementary_content_aria_label: 'Resources'