Updated how to use page link

Karim Khan · Karim Khan · commit dadfa70c76b5 · 2017-10-29T00:34:28.000+05:30
diff --git a/how-to-use.html b/how-to-use.html
@@ -20,7 +20,7 @@
 <body>
 
   <div style='text-align: center; padding: 50px;'>
-    <a href="index.html" class="ui-box bottom-leftToRight">Online Demo</a>
+    <a href="https://code-fx.github.io/Pure-CSS3-Animated-Border/" class="ui-box bottom-leftToRight">Online Demo</a>
   </div>
 
 </body>
