diff --git a/doc/_static/css/custom.css b/doc/_static/css/custom.css
index 3a8dd5539ac..2a37cab9995 100644
--- a/doc/_static/css/custom.css
+++ b/doc/_static/css/custom.css
@@ -6,6 +6,10 @@ h2 {
     scroll-margin-top: 4em; 
 }
 
+h3 {
+    scroll-margin-top: 4em; 
+}
+
 section {
     scroll-margin-top: 4em; 
 }