diff --git a/css/app.css b/css/app.css
index e7d7b02..1ac0f54 100644
--- a/css/app.css
+++ b/css/app.css
@@ -123,7 +123,7 @@ body {
     margin-right: auto;
     padding-top: 10px;
     padding-bottom: 10px;
-    padding-left: 0.8rem;
+    padding-left: 0.7rem;
 	line-height: 1.2;
 
     color: #FFF;
@@ -136,7 +136,7 @@ body {
     padding-right: 5px;
 
     color: #a6e22e;
-    font-size: 0.8rem;
+    font-size: 0.7rem;
     font-weight: normal;
     font-family: Consolas,"Courier New",Courier,FreeMono,monospace;
 
diff --git a/js/ditto.js b/js/ditto.js
index b81f53b..9ef814c 100644
--- a/js/ditto.js
+++ b/js/ditto.js
@@ -118,7 +118,7 @@ function create_page_anchors() {
 			this.id = 'h'+i+'-'+replace_symbols($(this).text());
         });
 
-        if (i === 2){
+        if ((i === 2) && headers.length !== 0){
 			var ul_tag = $('<ul></ul>')
 				.insertAfter('#content h1')
 				.addClass("content-toc")
diff --git a/sidebar.md b/sidebar.md
index 7de4bd1..c1ac3b4 100644
--- a/sidebar.md
+++ b/sidebar.md
@@ -5,7 +5,7 @@
 授权：<a rel="license" href="http://creativecommons.org/licenses/by-nc/4.0/">署名-非商用许可证</a>
 
 ## 目录
-- [首页：Readme](#README)
+- [前言](#README)
 - [ECMAScript 6简介](#docs/intro)
 - [Iterator：遍历器](#docs/iterator)