diff --git a/examples/index.html b/examples/index.html
index b361f900..0dbb5292 100644
--- a/examples/index.html
+++ b/examples/index.html
@@ -63,7 +63,7 @@
       </p>
       <center>
         <input type="file" id="fileInput" value="" accept="image/*"><br />
-        <button type="button" id="take-photo">Take a Photo</button>
+        <button type="button" id="take-photo" class="btn btn-primary btn-block btn-lg ">Take a Photo</button>
         <video  id="video" width="400" height="300" style="display:none"></video>
         <a href="#" id="capture" style="display:none" class="btn btn-primary btn-md">Click Picture</a>
         <a href="#" id="close" style="display:none" class="btn btn-default btn-md">Close</a>