diff --git a/contrib/static/site.css b/contrib/static/site.css
index 5279a3a..5e7c308 100644
--- a/contrib/static/site.css
+++ b/contrib/static/site.css
@@ -664,7 +664,7 @@ th > label {
 
 @keyframes flash {
     0% { opacity: 1;}
-    49% { opacity: 1s; }
+    49% { opacity: 1; }
     50% { opacity: 0; }
     100% { opacity: 0; }
 }