diff --git a/docs/assets/css/main.css b/docs/assets/css/main.css
index b1807046..bb4871d4 100644
--- a/docs/assets/css/main.css
+++ b/docs/assets/css/main.css
@@ -144,9 +144,9 @@ body[data-page="ja/README.md"] #m5stickc {
 }
 
 
-body[data-page="index.md"] #m5stickV,
-body[data-page="zh_CN/README.md"] #m5stickV,
-body[data-page="ja/README.md"] #m5stickV {
+body[data-page="index.md"] #m5stickv,
+body[data-page="zh_CN/README.md"] #m5stickv,
+body[data-page="ja/README.md"] #m5stickv {
     width: 0;
     height: 0;
     overflow: hidden;
diff --git a/docs/zh_CN/hat/hat-dac.md b/docs/zh_CN/hat/hat-dac.md
index eba29e03..6ad666f7 100644
--- a/docs/zh_CN/hat/hat-dac.md
+++ b/docs/zh_CN/hat/hat-dac.md
@@ -72,7 +72,7 @@
 -  **Datasheet** - [MCP4725](http://pdf1.alldatasheet.com/datasheet-pdf/view/233449/MICROCHIP/MCP4725.html)
 
 
-## Video
+## 相关视频
 **Demo** 
 
 <video width="500" height="500" controls>