diff --git a/css/default.css b/css/default.css
index 0b9aca9a6..110b205e3 100644
--- a/css/default.css
+++ b/css/default.css
@@ -36,7 +36,7 @@ a:hover, a:focus, a:active {color:#000;text-decoration:underline}
 #mb_nb img {margin-right:3px}
 
 /* gnb js off */
-#gnb {z-index:10;margin:-1px 0 0;background:#f5f6fa;zoom:1}
+#gnb {z-index:10;margin:-1px 0 0;border-top:1px solid #e9e9e9;border-bottom:1px solid #e9e9e9;background:#f5f6fa;zoom:1}
 #gnb:after {display:block;visibility:hidden;clear:both;content:""}
 #gnb h2 {position:absolute;font-size:0;line-height:0;overflow:hidden}
 #gnb_1dul {margin:0 auto;padding:0;width:980px;zoom:1}