diff --git a/public/X3DOMTutorial/hellox3dom.html b/public/X3DOMTutorial/hellox3dom.html
index 8d9e40de2ddf1dcb613f8077534de76319985259..0cb447525b422e4f240cc9202b594e220464c4de 100644
--- a/public/X3DOMTutorial/hellox3dom.html
+++ b/public/X3DOMTutorial/hellox3dom.html
@@ -5,7 +5,7 @@
   <title> Hello X3DOM </title>
   <link rel="stylesheet" type="text/css" href="x3dom.css">
   </link>
-  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.5.1/styles/vs.min.css"></link>
+  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.5.1/styles/vs.min.css">
   <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.5.1/highlight.min.js"></script>
   <script>hljs.highlightAll();</script>
 </head>
@@ -80,7 +80,7 @@
           node </a> associates a geometry node with
         nodes that define that geometry's appearance. The following example draws a blue box.        
 <pre>
-  <code class="language-html">
+<code class="language-html">
   &lt;X3D id="shapedata" width="600px" height="600px" style="float:left"&gt;
     &lt;Scene&gt; 
       &lt;background transparency='0' skyColor='1 0 0'&gt; &lt;/background&gt;