diff --git a/app/frontend/m/css/shell.css b/app/frontend/m/css/shell.css
index 3f2a407..531a95e 100644
--- a/app/frontend/m/css/shell.css
+++ b/app/frontend/m/css/shell.css
@@ -1,3 +1,7 @@
+[hidden] {
+  display: none !important;
+}
+
 #m-app,
 #m-app * {
   box-sizing: border-box;