diff --git a/SUMMARY.md b/SUMMARY.md
index af2b2b2..dffdd0a 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -1,8 +1,7 @@
 # Summary
 
-* [前言](introduction.md)
-
 ## 入门必看
+* [介绍](introduction.md)
 * [cd-ls-pwd](cd-ls-pwd.md)
 
 ## 用户与用户组
diff --git a/styles/website.css b/styles/website.css
index 94993c8..33c0b36 100644
--- a/styles/website.css
+++ b/styles/website.css
@@ -2,7 +2,7 @@
 .gitbook-link {
     display: none !important;
 }
-.summary > li:nth-child(3) {
+.summary > li:nth-child(4) {
     display: none !important;
 }
 li.chapter {