diff --git a/404.php b/404.php
index ff70c19..a6790a9 100644
--- a/404.php
+++ b/404.php
@@ -1,11 +1,12 @@
 <?php if (!defined('__TYPECHO_ROOT_DIR__')) exit; ?>
 <?php $this->need('header.php'); ?>
 
-<div class="col mt-5 text-center" id="main" role="main">
+<div class="col mt-5" id="main" role="main">
     <article>
             <h1 class="font-weight-bold">404 NOT FOUND.</h1>
+            <hr>
             <p><?php _e('您要找的页面不存在！'); ?></p>
-            <p><a href=<?php $this->options->siteUrl(); ?> ><?php _e('返回首页'); ?></a> </p>
+            <p><a class="btn btn-primary" href=<?php $this->options->siteUrl(); ?> ><?php _e('返回首页'); ?></a> </p>
     </article>
 </div><!-- end #content-->
 
diff --git a/assets/style.css b/assets/style.css
index b770eae..6cdb6cd 100644
--- a/assets/style.css
+++ b/assets/style.css
@@ -25,17 +25,12 @@
     font-weight: bold;
     line-height: 1.7;
 }
-/* Shadow Below 单边阴影，应用于 nav */
- .shadowb {
-    box-shadow: 0 20px 20px rgba(50, 50, 93, .1), 0 5px 5px rgba(0, 0, 0, .07);
-}
 /* post content style */
  article, article a {
     color: #172b4d;
 }
 .post-title:before {
     content:'#';
-    font-family: monospace;
 }
 article{
     font-size: 1rem;
diff --git a/header.php b/header.php
index 80f772e..2b0f35b 100644
--- a/header.php
+++ b/header.php
@@ -46,7 +46,6 @@
 <![endif]-->
 <body>
 
-<?php if (!($this->is('post') or $this->is('page'))) { ?>
 <header id="header" class="clearfix mt-5 mb-4">
     <div class="container">
         <div class="row">
@@ -72,10 +71,9 @@
         </div><!-- end .row -->
     </div>
 </header><!-- end #header -->
-<?php } ?>
 
 <!-- 如果 nav 放在 header 里，这个 sticky-top 就会被限制在 header 里，暂时只能这么写 -->
-<nav class="navbar navbar-light navbar-expand sticky-top shadowb">
+<nav class="navbar navbar-light navbar-expand sticky-top">
     <div class="container">
         <ul class="col navbar-nav justify-content-center">
             <li class="nav-item">
diff --git a/page.php b/page.php
index 15b7fe9..4cf3e67 100644
--- a/page.php
+++ b/page.php
@@ -6,6 +6,7 @@
         <h1 class="font-weight-bold post-title" itemprop="name headline">
             <a itemprop="url" href="<?php $this->permalink() ?>"><?php $this->title() ?></a>
         </h1>
+        <hr>
         <div class="post-content" itemprop="articleBody">
             <?php $this->content(); ?>
         </div>
