diff --git a/docs/index.html b/docs/index.html
index 31520dc..57f0777 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -15,7 +15,27 @@
   <script src="https://cdn.yimian.xyz/ushio-js/ushio-footer.min.js"></script>
   <script>
     docute.init({
-
+      sidebar: [
+        // A sidebar item, with child links
+        {
+          title: 'Guide',
+          children: [
+            {
+              title: 'Circuit Design',
+              link: '/part/schematic'
+            },
+            {
+              title: 'PCB Design',
+              link: '/part/pcb'
+            }
+          ]
+        },
+        // An external link
+        {
+          title: 'GitHub',
+          link: 'https://github.com/egoist/docute'
+        }
+      ]
     })
   </script>
 </body>