diff --git a/content/videos/_index.en.md b/content/videos/_index.en.md
index 1998f0f..f4a870d 100644
--- a/content/videos/_index.en.md
+++ b/content/videos/_index.en.md
@@ -3,10 +3,10 @@ title: Video Tutorials
 weight: 50
 ---
 
-# OSS
+## OSS
 [Installation and User Guide](https://www.youtube.com/watch?v=9nzHm3xGz2I)
 
 [RustDesk Security](https://www.youtube.com/watch?v=EeFqj23jxMk)
 
-# Pro
+## Pro
 [Youtube channel](https://youtube.com/@rustdesk)