diff --git a/static/style.css b/static/style.css
index c3cc94b..fd63c68 100644
--- a/static/style.css
+++ b/static/style.css
@@ -118,3 +118,7 @@ h3 {
 	font-weight: bold;
 	margin: 30px 0 10px 0;
 }
+
+.toc > ul > li > ul > li > ul {
+	display: none;
+}