diff --git a/index.html b/index.html
index 0c39818..9e31309 100644
--- a/index.html
+++ b/index.html
@@ -10,7 +10,6 @@
   <link rel="stylesheet" href="//cdn.jsdelivr.net/npm/katex@latest/dist/katex.min.css"/>
   <link rel="stylesheet" href="//cdn.jsdelivr.net/npm/docsify@4/lib/themes/vue.css" title="vue"/>
   <link rel="stylesheet" href="//cdn.jsdelivr.net/npm/docsify@4/lib/themes/dark.css" title="dark" disabled/>
-  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/docsify-themeable@0/dist/css/theme-defaults.css">
   <link rel="stylesheet" href="//cdn.jsdelivr.net/npm/docsify@4/lib/themes/buble.css" title="buble" disabled/>
   <link rel="stylesheet" href="//cdn.jsdelivr.net/npm/docsify@4/lib/themes/pure.css" title="pure" disabled/>
 </head>