diff --git a/docs/examples/hero.html b/docs/examples/hero.html
index 7d60d1a4..bfcd8034 100644
--- a/docs/examples/hero.html
+++ b/docs/examples/hero.html
@@ -3,6 +3,7 @@
   <head>
     <meta charset="utf-8">
     <title>Bootstrap, from Twitter</title>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <meta name="description" content="">
     <meta name="author" content="">
 
