Add descriptors

public/index.html

@@ -5,12 +5,15 @@
 <ul class="ul simple vertical menu callout callout-nested columns medium-5">
   <li><span class="tag">Master brand</span>
   <li><a href="basic.html">Group</a>
+      <br/>The core EMBL look and feel
   <ul class="callout callout-nested">
     <li><span class="tag">Sub brand</span>
-    <li><a href="subbrand-about.html">About EMBL-EBI</a></li>
+    <li><a href="subbrand-about.html">About EMBL-EBI</a>
+        <br/>The EBI subbrand with black bar
     <ul class="callout callout-nested">
       <li><span class="tag">Data brand</span>
       <li><a href="service.html">Service page</a>
+          <br/>A scientific service look and feel
     </ul>
   </ul>
 </ul>