additional background test

test/background.html

@@ -50,10 +50,19 @@
 					</section>
 				</section>
 
-				<section data-background="assets/image1.png" style="background: rgba(255,255,255,0.9)">
+				<section data-background-transition="slide" data-background="assets/image1.png" style="background: rgba(255,255,255,0.9)">
 					<h2>Background image</h2>
 				</section>
 
+				<section>
+					<section data-background-transition="slide" data-background="assets/image1.png" style="background: rgba(255,255,255,0.9)">
+						<h2>Background image</h2>
+					</section>
+					<section data-background-transition="slide" data-background="assets/image1.png" style="background: rgba(255,255,255,0.9)">
+						<h2>Background image</h2>
+					</section>
+				</section>
+
 				<section data-background="assets/image2.png" data-background-size="100px" data-background-repeat="repeat" data-background-color="#111" style="background: rgba(255,255,255,0.9)">
 					<h2>Background image</h2>
 					<pre>data-background-size="100px" data-background-repeat="repeat" data-background-color="#111"</pre>