diff --git a/HowtoCSS.md b/HowtoCSS.md
index 820ede94..966722c5 100644
--- a/HowtoCSS.md
+++ b/HowtoCSS.md
@@ -27,5 +27,5 @@ span#monid { /* ... */ }
  - le premier élément ayant comme parent :
 
 ~~~
-
+p.maclass span:nth-child(1) { /* ... */ }
 ~~~
\ No newline at end of file