diff --git a/layouts/default.html b/layouts/default.html
index 85cd7f1a..fcb4283f 100644
--- a/layouts/default.html
+++ b/layouts/default.html
@@ -2,6 +2,7 @@
 <html lang="de">
   <head>
     <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title><%= @item[:title] %></title>
     <link rel="stylesheet" href="/styles/main.css">
     <script src="/js/jquery-1.10.2.min.js" type="text/javascript"></script>
