diff --git a/src/routes/_components/Nav.html b/src/routes/_components/Nav.html
index 09f30d01..cc470960 100644
--- a/src/routes/_components/Nav.html
+++ b/src/routes/_components/Nav.html
@@ -29,7 +29,7 @@
left: 0;
right: 0;
top: 0;
- z-index: 20;
+ z-index: 100;
contain: content; /* see https://www.w3.org/TR/2018/CR-css-contain-1-20181108/#valdef-contain-content */
}