diff --git a/website/public/css/reset.css b/website/public/css/reset.css
index 433f923..00deeb1 100644
--- a/website/public/css/reset.css
+++ b/website/public/css/reset.css
@@ -88,3 +88,6 @@ textarea:not([rows]) {
   padding: 0;
 }
 
+[hidden] {
+  display: none;
+}