diff --git a/README.md b/README.md
index f988200..96e525e 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,8 @@
 
+html validator : https://validator.w3.org/nu
+
+---
+
 start it with a server, like : `alive-server`                                                                      
 - https://www.npmjs.com/package/alive-server                                                                       
 - install : `npm install -g alive-server`