diff --git a/source/less/_article.less b/source/less/_article.less
index 2fa3729..cca1be6 100755
--- a/source/less/_article.less
+++ b/source/less/_article.less
@@ -332,10 +332,16 @@
 
   .gutter{
     color: #999999;
-    padding-right: 20px;
+    width: 24px;
+    padding: 0 8px;
+    border-radius: 8px;
     text-align: right;
+    border-width: 0;
+    background-color: darken(@background-color, 5%);
   }
   .code{
+      padding-left: 8px;
+      padding-right: 16px;
       vertical-align: top;
       border: 0px solid darken(@background-color, 5%);
   }