diff --git a/docs/docs/03-syntax-and-usage/10-css-style-management.md b/docs/docs/03-syntax-and-usage/10-css-style-management.md
index 9241bafc0..83c39ac95 100644
--- a/docs/docs/03-syntax-and-usage/10-css-style-management.md
+++ b/docs/docs/03-syntax-and-usage/10-css-style-management.md
@@ -185,7 +185,7 @@ For example, to stop the `className` CSS class from being added to the output, t
 ```go
 c1 := className()
 handler := NewCSSMiddleware(httpRoutes, c1)
-http.ListenAndServe(":8000:, handler)
+http.ListenAndServe(":8000", handler)
 ```
 
 :::caution