diff --git a/module/doc/css/common.css b/module/doc/css/common.css
index e7371ef1c3..10e1334449 100644
--- a/module/doc/css/common.css
+++ b/module/doc/css/common.css
@@ -107,6 +107,7 @@ ol, ul {margin-bottom: 0}
 #pageNav #dropMenu .table-col .list-group .icon-move {display:block; float: left; font-size: 12px; padding: 3px 4px 3px 1px;}
 
 #content .detail-content.article-content {overflow-y: auto; height: calc(100vh - 200px); padding-right: 20px;}
+#content.scrollbar-hover .detail-content.article-content {height: 100%;}
 #aclBox .acl-tip {color: #838a9d;}
 .ajaxCollect > img.star-empty {margin-right: 0px;}
 #outlineMenu {background: #fff; position: absolute; height: calc(100vh - 180px)!important; overflow-y: auto; top: 50px; right: 25px;}