diff --git a/doc/style.css b/doc/style.css
index a46b8f8a99..882ce7435d 100644
--- a/doc/style.css
+++ b/doc/style.css
@@ -71,7 +71,7 @@ h2 {
 	padding: 2px 5px;
 }
 h3 {
-	font-size: 18px;
+	font-size: 20px;
 }
 h3,
 h4 {