diff --git a/static/assets/css/layouts/single.css b/static/assets/css/layouts/single.css
index c939fba..3c1c0cb 100644
--- a/static/assets/css/layouts/single.css
+++ b/static/assets/css/layouts/single.css
@@ -64,6 +64,7 @@ body {
 }
 
 .toc ul {
+  list-style: none;
   padding-left: 0.5rem;
   width: 100%;
 }
diff --git a/static/assets/css/navigators/sidebar.css b/static/assets/css/navigators/sidebar.css
index 9522e49..9faf7e7 100644
--- a/static/assets/css/navigators/sidebar.css
+++ b/static/assets/css/navigators/sidebar.css
@@ -55,7 +55,7 @@
 }
 
 .tree,
-ul {
+.tree ul {
   margin: 0;
   padding: 0;
   list-style: none;