diff --git a/index.html b/index.html
index dc7254310c..7119795b62 100644
--- a/index.html
+++ b/index.html
@@ -5,6 +5,7 @@
   <meta charset="utf-8" />
   <title>Webpack App</title>
   <link href="assets/bootstrap.min.css" rel="stylesheet" />
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
 </head>
 <style>
   .demo__img {