diff --git a/index.html b/index.html
index 4e39249..bf9edce 100644
--- a/index.html
+++ b/index.html
@@ -2,9 +2,10 @@
 <html>
 <head>
 	<meta charset="UTF-8">
+	<meta http-equiv="X-UA-Compatible" content="IE=edge">
 	<title>RubyConf. China 2016</title>
 	<link rel="stylesheet" href="/assets/css/application.min.css">
-
+	<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
 </head>
 <body>
 	<div class="bg"></div>
