diff --git a/core/style.css b/core/style.css
index cfc0911..6917148 100644
--- a/core/style.css
+++ b/core/style.css
@@ -723,6 +723,7 @@ nav.top .navbutton-bar .button.selected {
 	position: sticky;
 	background-size: 64px;
 	height: 60px;
+	z-index: -1;
 }
 
 .heading {