diff --git a/chromeless.html b/chromeless.html
index 34cef7a1..0d70561b 100644
--- a/chromeless.html
+++ b/chromeless.html
@@ -224,20 +224,20 @@
 
 				<section>
 					<h2>Pretty Code</h2>
-					<pre><code class="hljs" data-trim contenteditable>
-function linkify( selector ) {
-  if( supports3DTransforms ) {
+					<pre><code class="hljs" data-trim data-line-numbers="4|9|4,8-11">
+import React, { useState } from 'react';
 
-    var nodes = document.querySelectorAll( selector );
+function Example() {
+  const [count, setCount] = useState(0);
 
-    for( var i = 0, len = nodes.length; i &lt; len; i++ ) {
-      var node = nodes[i];
-
-      if( !node.className ) {
-        node.className += ' roll';
-      }
-    }
-  }
+  return (
+    &lt;div&gt;
+      &lt;p&gt;You clicked {count} times&lt;/p&gt;
+      &lt;button onClick={() =&gt; setCount(count + 1)}&gt;
+        Click me
+      &lt;/button&gt;
+    &lt;/div&gt;
+  );
 }
 					</code></pre>
 					<p>Code syntax highlighting courtesy of <a href="http://softwaremaniacs.org/soft/highlight/en/description/">highlight.js</a>.</p>
@@ -394,10 +394,9 @@ Reveal.addEventListener( 'customevent', function() {
 
 				// More info https://github.com/hakimel/reveal.js#dependencies
 				dependencies: [
-					{ src: 'lib/js/classList.js', condition: function() { return !document.body.classList; } },
 					{ src: 'plugin/markdown/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
 					{ src: 'plugin/markdown/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
-					{ src: 'plugin/highlight/highlight.js', async: true, callback: function() { hljs.initHighlightingOnLoad(); } },
+					{ src: 'plugin/highlight/highlight.js' },
 					{ src: 'plugin/search/search.js', async: true },
 					{ src: 'plugin/zoom-js/zoom.js', async: true },
 					{ src: 'plugin/notes/notes.js', async: true }