--- a/rdf-primer/index.html	Tue Dec 03 19:30:59 2013 +0100
+++ b/rdf-primer/index.html	Tue Dec 03 19:36:56 2013 +0100
@@ -107,7 +107,7 @@
     </script>
     <style type="text/css">
       figure { text-align: center; }
-      img { width: 80%; }
+      img.graph { width: 80%; }
       table td, table th { border: 1px solid #ddd; padding: 0.2em 0.5em; }
     </style>
   </head>
@@ -298,7 +298,7 @@
     predicates form the arcs. </p> 
 
     <figure>
-      <img src="example-graph.jpg"
+      <img class="graph" src="example-graph.jpg"
                 alt="Informal graphs of the sample triples">
       <figcaption>Informal graph of the sample triples</figcaption>
     </figure>
@@ -351,7 +351,7 @@
       <div class="example"><a href="http://data.europeana.eu/item/04802/243FA8618938F4117025F17A8B813C5F9AA4D619">http://data.europeana.eu/item/04802/243FA8618938F4117025F17A8B813C5F9AA4D619</a></div>
 
     <figure>
-      <img src="example-graph-iris.jpg" 
+      <img class="graph" src="example-graph-iris.jpg" 
                 alt="Informal graphs of the sample triples, with IRIs">
       <figcaption>Informal graph of the sample triples, with IRIs</figcaption>
     </figure>
@@ -506,7 +506,7 @@
     multiple graphs that is closely aligned with SPARQL. </p> 
 
     <figure>
-      <img src="example-multiple-graphs.jpg" 
+      <img class="graph" src="example-multiple-graphs.jpg" 
                 alt="Informal graph of the multiple graphs example">
       <figcaption>Informal graph of the multiple graphs example</figcaption>
     </figure>
@@ -760,7 +760,7 @@
 <p>The figure below shows the triples resulting from this example.</p>
 
 <figure id="fig-abstract-graph-single">
-  <img src="abstract-graph-single.jpg" 
+  <img class="graph" src="abstract-graph-single.jpg" 
        alt="Triples resulting from the Turtle example">
   <figcaption>Triples resulting from the Turtle example. </figcaption>
 </figure>
@@ -866,7 +866,7 @@
     <p>The figure below shows the triples resulting from this example.</p>
 
     <figure id="fig-abstract-graph-multiple">
-      <img src="http://www.example.org/abstract-graph-multiple" 
+      <img class="graph" src="http://www.example.org/abstract-graph-multiple" 
            alt="Triples resulting from the TriG example">
       <figcaption>Triples resulting from the TriG example</figcaption>
     </figure>