diff --git a/docs/_template/light-dark-theme/styles/master.css b/docs/_template/light-dark-theme/styles/master.css
index 41ee17a97..b351e97b3 100644
--- a/docs/_template/light-dark-theme/styles/master.css
+++ b/docs/_template/light-dark-theme/styles/master.css
@@ -209,4 +209,19 @@ span.arrow-r{
 .level3 {
     padding: 0 5px;
     font-size: 90%;
+}
+
+.level4 {
+    padding: 0 5px;
+    font-size: 85%;
+}
+
+.level5 {
+    padding: 0 5px;
+    font-size: 80%;
+}
+
+.level6 {
+    padding: 0 5px;
+    font-size: 75%;
 }
\ No newline at end of file