diff --git a/admin/404.html b/admin/404.html
new file mode 100644
index 00000000..40d481ee
--- /dev/null
+++ b/admin/404.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8">
+        <title>Page Not Found :(</title>
+        <style>
+            html {
+                padding: 50px 10px;
+                font-size: 20px;
+                line-height: 1.4;
+                color: #666;
+                background: #F6F6F3;
+                -webkit-text-size-adjust: 100%;
+                -ms-text-size-adjust: 100%;
+            }
+
+            html,
+            input { font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; }
+            body {
+                max-width: 500px;
+                _width: 500px;
+                padding: 30px 20px 50px;
+                margin: 0 auto;
+                background: #FFF;
+            }
+            h1 {
+                font-size: 50px;
+                text-align: center;
+            }
+            h1 span { color: #bbb; }
+            ul {
+                padding: 0 0 0 40px;
+            }
+            .container {
+                max-width: 380px;
+                _width: 380px;
+                margin: 0 auto;
+            }
+        </style>
+    </head>
+    <body>
+        <div class="container">
+            <h1>Not found <span>:(</span></h1>
+            <p>Sorry, but the page you were trying to view does not exist.</p>
+            <p>It looks like this was the result of either:</p>
+            <ul>
+                <li>a mistyped address</li>
+                <li>an out-of-date link</li>
+            </ul>
+        </div>
+    </body>
+</html>
diff --git a/admin/write-page.php b/admin/write-page.php
index 35973c1c..8037c0c0 100644
--- a/admin/write-page.php
+++ b/admin/write-page.php
@@ -52,7 +52,7 @@ Typecho_Widget::widget('Widget_Contents_Page_Edit')->to($page);
 
                         <section class="typecho-post-option">
                             <label for="order" class="typecho-label"><?php _e('页面顺序'); ?></label>
-                            <p><input type="text" id="order" name="order" value="<?php $page->order(); ?>" class="mini" /></p>
+                            <p><input type="text" id="order" name="order" value="<?php $page->order(); ?>" class="w-100" /></p>
                             <p class="description"><?php _e('为你的自定义页面设定一个序列值以后, 能够使得它们按此值从小到大排列'); ?></p>
                         </section>
 
