diff --git a/repository/Seaside-Development.package/WADevelopmentFiles.class/instance/developmentCss.st b/repository/Seaside-Development.package/WADevelopmentFiles.class/instance/developmentCss.st
index 06a97635d..8f203c5d9 100644
--- a/repository/Seaside-Development.package/WADevelopmentFiles.class/instance/developmentCss.st
+++ b/repository/Seaside-Development.package/WADevelopmentFiles.class/instance/developmentCss.st
@@ -6,7 +6,7 @@ body { margin-bottom: 25px !important; /*matches toolbar min-height + padding an
 	left: 0;
 	right: 0;
 	bottom: 0;
-	z-index: 20;
+	z-index: 99999;
 	padding: 2px;
 	position: fixed;
 	text-align: left;