diff --git a/themes/luci-theme-openwrt/htdocs/luci-static/openwrt.org/cascade.css b/themes/luci-theme-openwrt/htdocs/luci-static/openwrt.org/cascade.css
index f6ea9645ff..f8133833e8 100644
--- a/themes/luci-theme-openwrt/htdocs/luci-static/openwrt.org/cascade.css
+++ b/themes/luci-theme-openwrt/htdocs/luci-static/openwrt.org/cascade.css
@@ -211,6 +211,7 @@ hr {
 	-webkit-overflow-scrolling: touch;
 	transition: opacity .125s ease-in;
 	opacity: 0;
+	visibility: hidden;
 }
 
 .modal {
@@ -250,6 +251,7 @@ body.modal-overlay-active #modal_overlay {
 	left: 0;
 	right: 0;
 	opacity: 1;
+	visibility: visible;
 }
 
 .warning {