diff --git a/sidebar.md b/sidebar.md
index 18074c2..f8b475b 100644
--- a/sidebar.md
+++ b/sidebar.md
@@ -5,7 +5,9 @@
 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
+
 <ol start="0">
+
 - [前言](#README)
 - [ECMAScript 6简介](#docs/intro)
 - [let和const命令](#docs/let)
@@ -21,6 +23,7 @@
 - [Promise对象](#docs/promise)
 - [Class和Module](#docs/class)
 - [参考链接](#docs/reference)
+
 </ol>
 
 ## 其他