diff --git a/index.html b/index.html
index e54adf5..48a9adf 100644
--- a/index.html
+++ b/index.html
@@ -2,6 +2,7 @@
 <html>
     <head>
         <meta charset="UTF-8">
+        <meta name="viewport" content="width=device-width, user-scalable=no" />
         <style>
             * {
                 box-sizing: border-box;