diff --git a/index.html b/index.html
index 279f9d484..14080c367 100644
--- a/index.html
+++ b/index.html
@@ -3,6 +3,7 @@
 <head>
     <meta charset="UTF-8">
     <title>Document</title>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <link rel="stylesheet" type="text/css" href="css/index.css">
     <link rel="stylesheet" href="https://fonts.google.com/specimen/Raleway?selection.family=Raleway">
 </head>
