diff --git a/tutorial/index.html b/tutorial/index.html
index 0c9bf29e6..83b18b612 100644
--- a/tutorial/index.html
+++ b/tutorial/index.html
@@ -93,7 +93,7 @@ hljs.initHighlightingOnLoad();
 <div class="row-fluid">
 
 <!-- Side navigation bar -->
-<div class="span4 well">
+<div class="span3 well">
 <ul class = "nav nav-list">
    <li class="nav-header">Getting Started</li>
     <li class="active">
@@ -134,7 +134,7 @@ hljs.initHighlightingOnLoad();
 </div>
 
 <!-- Tabs -->
-<div class="span8 tab-content">
+<div class="span9 tab-content">
    
 <!-- Welcome -->   
 <div class="tab-pane active" id="welcome">