diff --git a/source/css/_layout/tag-plugins/folding.styl b/source/css/_layout/tag-plugins/folding.styl
index f59442b..5b54937 100644
--- a/source/css/_layout/tag-plugins/folding.styl
+++ b/source/css/_layout/tag-plugins/folding.styl
@@ -63,3 +63,5 @@ details[codeblock]>div.body
     border-radius: 0
     background: transparent
     margin: 0
+    .code:before
+      content: none