diff --git a/index.html b/index.html
index 57a6bbf..b3f3e0d 100644
--- a/index.html
+++ b/index.html
@@ -16,7 +16,21 @@
     <meta name="description" content="Description">
     <meta name="viewport"
           content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
-    <link rel="stylesheet" href="//cdn.jsdelivr.net/npm/docsify/lib/themes/vue.css">
+    <link rel="stylesheet" href="//cdn.jsdelivr.net/npm/docsify-themeable@0/dist/css/theme-simple.css">
+    <style>
+        :root {
+            /* Reduce the font size */
+            /* --base-font-size: 14px; */
+
+            /* Change the theme color hue (0-360) */
+            /* --theme-hue: 325; */
+
+            /* Add sidebar navigation bullets */
+            /* --sidebar-nav-link-before-content-l1: "😀"; */
+            /* --sidebar-nav-link-before-content-l2: "💩"; */
+            --link-color: var(--theme-color);
+        }
+    </style>
 </head>
 <body>
 <div id="app"></div>
