diff --git a/public/index.html b/public/index.html
index 2494fa3..06f8f1d 100644
--- a/public/index.html
+++ b/public/index.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en">
+<html lang="zh-cn">
 
 <head>
   <meta charset="utf-8" />
@@ -9,9 +9,8 @@
 
   <meta name="description" content="Coverview 是一款开源工具，可快速、轻松地为你的博客创建封面图片。使用不同的主题、颜色、字体等进行自定义。" />
   <link rel="apple-touch-icon" href="./logo.png" />
-  <!-- <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.1/css/bootstrap.min.css"
-    integrity="sha384-VCmXjywReHh4PwowAiWNagnWcLhlEJLA5buUprzK8rxFgeH0kww/aWY76TfkUoSX" crossorigin="anonymous"> -->
-  <link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/konpa/devicon@master/devicon.min.css" crossorigin="anonymous">
+  <link rel="stylesheet" href="https://lf6-cdn-tos.bytecdntp.com/cdn/expire-1-M/bootstrap/5.1.3/css/bootstrap.min.css" crossorigin="anonymous">
+  <link rel="stylesheet" href="https://i.czl.net/jsdelivr/gh/konpa/devicon@master/devicon.min.css" crossorigin="anonymous">
   <!--
       manifest.json provides metadata used when your web app is installed on a
       user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
@@ -49,8 +48,6 @@
       To begin the development, run `npm start` or `yarn start`.
       To create a production bundle, use `npm run build` or `yarn build`.
     -->
-    <script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-4684536310184190"
-     crossorigin="anonymous"></script>
 </body>
 
 </html>
\ No newline at end of file
