diff --git a/dev.less b/dev.less
index c55e30d..02a2d2e 100644
--- a/dev.less
+++ b/dev.less
@@ -27,7 +27,7 @@ body::before {
 	font-weight: bold;
 	z-index: 9999;
 }
-body::before:hover{
+body:before:hover{
 	background-color: #fff;
 }
 
@@ -46,7 +46,9 @@ body::before:hover{
 }
 */
 
-
 iframe{
 	border:1px solid red !important;
 }
+#maincontent{
+  border:1px solid green !important;
+}