diff --git a/lib.css b/lib.css
index 9a7799d..81d48e9 100644
--- a/lib.css
+++ b/lib.css
@@ -393,6 +393,10 @@ See the LICENCE file in the repository root for full licence text.
   display: none;
   opacity: 0;
 }
+.hidden-important {
+  display: none!important;
+  opacity: 0!important;
+}
 .block {
   display: block;
 }