additional background test

test/background.html

@@ -58,6 +58,13 @@
 					<h2>Background image</h2>
 					<pre>data-background-size="100px" data-background-repeat="repeat" data-background-color="#111"</pre>
 				</section>
+
+				<section data-background="#888888">
+					<h2>Same background twice (1/2)</h2>
+				</section>
+				<section data-background="#888888">
+					<h2>Same background twice (2/2)</h2>
+				</section>
 				
 			</div>