diff --git a/Doc/html/style.css b/Doc/html/style.css
index 075fdb321c4..7bfa16ff897 100644
--- a/Doc/html/style.css
+++ b/Doc/html/style.css
@@ -63,8 +63,7 @@ var { font-family: serif;
.url { font-family: avantgarde, sans-serif }
.file { font-family: avantgarde, sans-serif }
-.tableheader td { background-color: #99ccff; }
-.tableheader th { background-color: #99ccff;
+.tableheader { background-color: #99ccff;
font-family: avantgarde, sans-serif; }
.refcount-info { font-style: italic }