diff --git a/components/tabs/demo/card-top.md b/components/tabs/demo/card-top.md
index 8edfc25055..6978e57d24 100644
--- a/components/tabs/demo/card-top.md
+++ b/components/tabs/demo/card-top.md
@@ -33,7 +33,8 @@ ReactDOM.render(
   height: 120px;
   margin-top: -16px;
 }
-.card-container > .ant-tabs-card .ant-tabs-tabs-bar,
+
+.card-container > .ant-tabs-card .ant-tabs-bar,
 .card-container > .ant-tabs-card .ant-tabs-tab-active {
   border-color: #fff;
 }