diff --git a/src/html/index.html b/src/html/index.html
index f89f5ef..274c97f 100644
--- a/src/html/index.html
+++ b/src/html/index.html
@@ -3,6 +3,7 @@
   <head>
     <title></title>
     <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0">
     <script src="/js/index.js"></script>
   </head>
   <body>
