diff --git a/site/theme/static/demo.less b/site/theme/static/demo.less
index 5701252bfb..3e51f47949 100644
--- a/site/theme/static/demo.less
+++ b/site/theme/static/demo.less
@@ -70,7 +70,7 @@
   border: 0;
 }
 
-.code-box-meta {
+.code-box-meta.markdown {
   position: relative;
   padding: 16px;
   border-radius: 0 0 6px 6px;
@@ -256,7 +256,6 @@ section.code-box-meta p {
   width:15%;
   float:right;
   margin:12px 10px 0;
-
 }
 .code-box-demo .demo-content .demo-listBox .demo-list ul li {
   height: 25px;
@@ -344,8 +343,6 @@ section.code-box-meta p {
   content: "";
 }
 
-
-
 // queue-animate style, should be remove after queue-animate is remove.
 .code-box-demo .demo-header {
   width: 100%;