diff --git a/public/404.html b/public/404.html
index 9a48320..3c16ac6 100755
--- a/public/404.html
+++ b/public/404.html
@@ -5,15 +5,17 @@
   <style type="text/css">
     body { background-color: #fff; color: #666; text-align: center; font-family: arial, sans-serif; }
     div.dialog {
-      width: 25em;
-      padding: 0 4em;
-      margin: 4em auto 0 auto;
+      max-width:100%;
+      padding: 0 1em;
+      margin: 1em auto 0 auto;
       border: 1px solid #ccc;
       border-right-color: #999;
       border-bottom-color: #999;
     }
     h1 { font-size: 100%; color: #f00; line-height: 1.5em; }
   </style>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+
 </head>
 
 <body>
@@ -21,6 +23,8 @@
   <div class="dialog">
     <h1>The page you were looking for doesn't exist.</h1>
     <p>You may have mistyped the address or the page may have moved.</p>
+    <p><a href="/">return to main page</a>
   </div>
+
 </body>
 </html>
