fix missing parentheses

diff --git a/src/css/search.css b/src/css/search.css
index d76297e71..ef2be6e9b 100755
--- a/src/css/search.css
+++ b/src/css/search.css
@@ -4584,7 +4584,7 @@ table.wikitable > caption
 }
 .mobile .list-resource input
 {
-    width: calc(min(100% - 8px, 300px);
+    width: calc(min(100% - 8px, 300px));
 }
 /*
 Styles for the classifiers settings pages