Add tags

docs/documentation/elements/image.html

@@ -2,6 +2,9 @@
 layout: documentation
 doc-tab: elements
 doc-subtab: image
+variables:
+- name: $dimensions
+  value: 16 24 32 48 64 96 128
 ---
 
 {% include subnav-elements.html %}
@@ -142,5 +145,8 @@ doc-subtab: image
     <div class="content">
       <p>The <code>.image</code> container will take up the <strong>whole width</strong> while maintaining the perfect ratio.</p>
     </div>
+
+    {% include variables.html %}
+
   </div>
 </section>