diff --git a/template/app_doc/doc.html b/template/app_doc/doc.html
index 9d831cfa4..d2b16f7d0 100644
--- a/template/app_doc/doc.html
+++ b/template/app_doc/doc.html
@@ -50,7 +50,7 @@ <h1>{{ doc.name }}</h1><hr>
         <textarea style="display: none;">{{ doc.pre_content }}</textarea>
     {% elif doc.editor_mode == 4 %}
         <style>
-            .big-page .doc-content,.big-page .doc-body-content-div{
+            .doc-content,.doc-body-content-div{
                 max-width: 100%;
             }
         </style>