diff --git a/htmlcssguide.html b/htmlcssguide.html
index b42fe4d..af4523d 100644
--- a/htmlcssguide.html
+++ b/htmlcssguide.html
@@ -6,6 +6,7 @@
 <link rel="stylesheet" href="javaguide.css">
 <script src="include/styleguide.js"></script>
 <link rel="shortcut icon" href="/styleguide/favicon.ico">
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
 <script src="include/jsguide.js"></script>
 </head>
 <body onload="initStyleGuide();">
diff --git a/javaguide.html b/javaguide.html
index 0d78b1a..f1c7cfa 100644
--- a/javaguide.html
+++ b/javaguide.html
@@ -6,6 +6,7 @@
 <link rel="stylesheet" href="javaguide.css">
 <script src="include/styleguide.js"></script>
 <link rel="shortcut icon" href="/styleguide/favicon.ico">
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
 <script src="https://cdn.jsdelivr.net/gh/google/code-prettify@master/loader/run_prettify.js"></script>
 </head>
 <body onload="initStyleGuide();">
diff --git a/jsguide.html b/jsguide.html
index 6eb579c..6c7e91e 100644
--- a/jsguide.html
+++ b/jsguide.html
@@ -6,6 +6,7 @@
 <link rel="stylesheet" href="javaguide.css">
 <script src="include/styleguide.js"></script>
 <link rel="shortcut icon" href="/styleguide/favicon.ico">
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
 <script src="include/jsguide.js"></script>
 </head>
 <body onload="initStyleGuide();">
diff --git a/tsguide.html b/tsguide.html
index d96372f..1780af5 100644
--- a/tsguide.html
+++ b/tsguide.html
@@ -6,6 +6,7 @@
 <link rel="stylesheet" href="javaguide.css">
 <script src="include/styleguide.js"></script>
 <link rel="shortcut icon" href="/styleguide/favicon.ico">
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
 <script src="include/jsguide.js"></script>
 </head>
 <body onload="initStyleGuide();">