diff --git a/index.html b/index.html
index c9f06e3..dc876ab 100644
--- a/index.html
+++ b/index.html
@@ -112,7 +112,7 @@ Hardware interfaces for morse keys and telegraph sounders are available for seri
 </p>
 <p>
 <a name="architecture"></a>
-<a href="#" class=""><img src="images/architecture.png" alt="" /></a>
+<a href="#" class="image featured"><img src="images/architecture.png" alt="" /></a>
 </p>
 </article>
 </div>