diff --git a/public/index.html b/public/index.html
index 72636cf..23dc984 100644
--- a/public/index.html
+++ b/public/index.html
@@ -8,17 +8,23 @@
     <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
   </head>
   <body>
-    <h1>IDLab Turtle Validator</h1>
-    <p>This is the web version of the NodeJS <a href="https://github.com/mmlab/TurtleValidator">Turtle Validator</a>,
-    which is also available as a command line tool.</p>
-    <h2>Paste your turtle file in here and press validate</h2>
-    <form>
-      <textarea class="area" id="ta_turtle"></textarea>
-      <input type="button" id="btn_validate" value="Validate!"/>
-    </form>
-    <ul id="errors"></ul>
-    <ul id="warnings"></ul>
-    <p id="results"></p>
-    <script src="js/app.js"></script>
+    <div class="container">
+      <h1>IDLab Turtle Validator</h1>
+      <p>This is the web version of the NodeJS <a href="https://github.com/mmlab/TurtleValidator">Turtle Validator</a>,
+      which is also available as a command line tool.</p>
+      <h2>Paste your turtle file in here and press validate</h2>
+      <form>
+        <div class="form-group">
+          <textarea class="area" id="ta_turtle"></textarea>
+        </div>
+        <div class="form-group">
+          <input type="button" id="btn_validate" class="btn btn-default" value="Validate!"/>
+        </div>
+      </form>
+      <ul id="errors"></ul>
+      <ul id="warnings"></ul>
+      <p id="results"></p>
+      <script src="js/app.js"></script>
+    </div>
   </body>
 </html>
