diff --git a/public/index.html b/public/index.html
index 8fad353..8798be2 100644
--- a/public/index.html
+++ b/public/index.html
@@ -4,7 +4,7 @@
     <meta charset="UTF-8">
     <title>Käfigrechner</title>
     <link rel="stylesheet" href="assets/css/style.css">
-
+    <meta content="width=device-width, initial-scale=1" name="viewport" />
     <link rel="apple-touch-icon" sizes="180x180" href="assets/favicon/apple-touch-icon.png">
     <link rel="icon" type="image/png" sizes="32x32" href="assets/favicon/favicon-32x32.png">
     <link rel="icon" type="image/png" sizes="16x16" href="assets/favicon/favicon-16x16.png">