diff --git a/prive/themes/spip/bando.css.html b/prive/themes/spip/bando.css.html
index 9bee7c043040b189c7ec8cdc6ccbd78602fb0c91..b182c8a60a09b9c7c9a496d4b89428f3e2746e45 100644
--- a/prive/themes/spip/bando.css.html
+++ b/prive/themes/spip/bando.css.html
@@ -124,6 +124,9 @@
 	border-color: var(--spip-color-theme);
 	outline: none;
 }
+.bando-haut .menu-simple__item + .menu-simple__item {
+	margin-#LEFT:-1px;
+}
 .bando-haut .menu-simple__item + .menu-simple__item:before {
 	content:'';
 	display: inline-block;
@@ -133,6 +136,7 @@
 	position: relative;
 	#LEFT: calc(-1 * var(--spip-bando-id-spacing-x));
 	margin-#LEFT:-1px;
+	z-index:-1;
 }
 .bando-haut .menu-simple img {
 	vertical-align: middle;