diff --git a/text-mode.html b/text-mode.html
index 78ac333..5fa1b4a 100644
--- a/text-mode.html
+++ b/text-mode.html
@@ -17,6 +17,7 @@
 <html>
   <head>
     <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
     <style>
      body {
        border: 0;
