diff --git a/index.html b/index.html
index 1979d71..b0a4438 100644
--- a/index.html
+++ b/index.html
@@ -2,6 +2,7 @@
 <html>
 <head>
   <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
   <title>Posmant — Aplikasi Kasir Gratis untuk Usaha Kecil</title>
   <style>
     * { margin: 0; padding: 0; box-sizing: border-box; }
