diff --git a/docs/assets/css/main.css b/docs/assets/css/main.css
index acc900de..51a01022 100644
--- a/docs/assets/css/main.css
+++ b/docs/assets/css/main.css
@@ -475,11 +475,6 @@ body[data-page="zh_CN/README.md"] .search {
         margin-right: 0px;
         width: 130px;
     }
-    .back_top {
-        position: fixed;
-        right: 10px;
-        bottom: 150px;
-    }
     .item {
         width: 130px;
         margin-right: 10px;
diff --git a/docs/en/app/demo-board.md b/docs/en/app/demo-board.md
index 574152fb..f36a17b8 100644
--- a/docs/en/app/demo-board.md
+++ b/docs/en/app/demo-board.md
@@ -4,7 +4,7 @@
 
 ***
 
-:memo:**[Description](#Description)**    :electric_plug:**[Schematic](#Schematic)**    :bulb:**[Quick Start](#Quick-Start)**    :octocat:**[Example](#Example)**    🛒**[Purchase](https://m5stack.com/collections/m5-application/products/iot-learning-kit)**      
+:memo:**[Description](#Description)**    :electric_plug:**[Schematic](#Schematic)**    :bulb:**[Manual](https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/Demo-Board_en.pdf)**    :octocat:**[Example](#Example)**    🛒**[Purchase](https://m5stack.com/collections/m5-application/products/iot-learning-kit)**      
 
 
 
@@ -28,7 +28,7 @@
 - step motor with four-phase five-wire 
 - Radio frequency identification Reader
 - RS-458，RS232 series communication
-  
+
 <img src="assets/img/product_pics/app/Demo-Board/Demo-Board_03.jpg" width="250" height="250">
 
 ## Include
@@ -43,10 +43,6 @@
 <img src="assets/img/product_pics/app/Demo-Board/Demo-Board_04.jpg" width="250" height="250">
 
 
-
-<h1 id="quick-start"><a href="https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/Demo-Board_en.pdf" data-id="quick-start" ><span>Quick-Start</span></a></h1>
-
-
 ## EasyLoader
 
 <img src="https://m5stack.oss-cn-shenzhen.aliyuncs.com/image/EasyLoader_logo.png" width="100px" style="margin-top:20px">
diff --git a/docs/index.html b/docs/index.html
index e9555460..d582a419 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -300,4 +300,17 @@
   gtag('config', 'UA-138139529-2');
 </script>
 
+<!-- Hotjar Tracking Code for https://docs.m5stack.com/#/ -->
+<script>
+    (function(h,o,t,j,a,r){
+        h.hj=h.hj||function(){(h.hj.q=h.hj.q||[]).push(arguments)};
+        h._hjSettings={hjid:1546100,hjsv:6};
+        a=o.getElementsByTagName('head')[0];
+        r=o.createElement('script');r.async=1;
+        r.src=t+h._hjSettings.hjid+j+h._hjSettings.hjsv;
+        a.appendChild(r);
+    })(window,document,'https://static.hotjar.com/c/hotjar-','.js?sv=');
+</script>
+
+
 </html>
\ No newline at end of file
diff --git a/docs/zh_CN/app/demo-board.md b/docs/zh_CN/app/demo-board.md
index 2b1446f5..6aa5f08b 100644
--- a/docs/zh_CN/app/demo-board.md
+++ b/docs/zh_CN/app/demo-board.md
@@ -4,7 +4,7 @@
 
 * * *
 
-:memo:**[描述](#描述)**&nbsp;&nbsp;&nbsp;:electric_plug:**[原理图](#原理图)**&nbsp;&nbsp;&nbsp;:bulb:**[上手指南](#上手指南)**&nbsp;&nbsp;&nbsp;:octocat:**[例程](#例程)**&nbsp;&nbsp;&nbsp;🛒**[购买链接](https://m5stack.com/collections/m5-application/products/iot-learning-kit)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+:memo:**[描述](#描述)**&nbsp;&nbsp;&nbsp;:electric_plug:**[原理图](#原理图)**&nbsp;&nbsp;&nbsp;:bulb:**[上手指南](https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/Demo-Board_cn.pdf)**&nbsp;&nbsp;&nbsp;:octocat:**[例程](#例程)**&nbsp;&nbsp;&nbsp;🛒**[购买链接](https://m5stack.com/collections/m5-application/products/iot-learning-kit)**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 
 
 ## 描述
@@ -48,12 +48,6 @@
 
 <img src="assets/img/product_pics/app/Demo-Board/Demo-Board_04.jpg" width="250" height="250">
 
-<!-- ## 上手指南
-
-?>[点击此处，查看上手指南](https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/Demo-Board_cn.pdf) -->
-
-<h1 id="上手指南"><a href="https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/Demo-Board_cn.pdf" data-id="quick-start" ><span>上手指南</span></a></h1>
-
 
 ## EasyLoader