diff --git a/index.html b/index.html
index 41a3745..ae58fe0 100644
--- a/index.html
+++ b/index.html
@@ -4,6 +4,7 @@
   <meta charset="utf-8">
   <title>reiyua</title>
   <link rel="icon" type="image/x-icon" href="/assets/favicon.ico">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
 </head>
 <body>
 
