diff --git a/layout.css.html b/layout.css.html
index 554c233109e3ad1aa36471e58ad672a124da82be..c3f7088407df9f4e28b3e779e5b2ce5acfdd0152 100644
--- a/layout.css.html
+++ b/layout.css.html
@@ -13,8 +13,10 @@
 /* http://blog.html.it/layoutgala/index.html */
 /* Mode mobile ici sans media queries */
 
-#extra {
-	display: grid;
+#navigation, #extra {
+	display: flex;
+	flex-direction: column;
+	flex-wrap: nowrap;
 }
 
 /* Mode Tablette définition des grilles CSS */