diff --git a/layout.css.html b/layout.css.html
index 773dec91fcbed67f2e7785595624183701736e4c..9b29f206b0c6f5345d30c85425fb9cb3eb6ba829 100644
--- a/layout.css.html
+++ b/layout.css.html
@@ -11,6 +11,9 @@
 /* http://blog.html.it/layoutgala/index.html */
 /* Mode mobile ici sans media queries */
 
+#extra {
+	display: grid;
+}
 
 /* Mode Tablette définition des grilles CSS */
 @media screen and (min-width: 768px) {