diff --git a/src/_header.html b/src/_header.html
index 672d6f1..3651175 100644
--- a/src/_header.html
+++ b/src/_header.html
@@ -6,6 +6,7 @@
         <meta charset=UTF-8>
         <link rel=stylesheet href=style.css>
         <link rel="shortcut icon" type="image/x-icon" href="favicon.png">
+        <meta name="viewport" content="width=device-width, initial-scale=1">
     </head>
 
     <body>
