diff --git a/src/css/doc.css b/src/css/doc.css
index 99e56b44..cc13f88d 100644
--- a/src/css/doc.css
+++ b/src/css/doc.css
@@ -1300,7 +1300,7 @@ body {
   border: none;
 }
 
-.doc details {
+.doc div > details {
   margin-bottom: 1.5rem;
 }