diff --git a/dev.less b/dev.less
index 4250453..c2bf978 100644
--- a/dev.less
+++ b/dev.less
@@ -108,7 +108,8 @@ body::before {
     font-family: arial !important;
 }
 
-#hc_table th tr:first{
-    background: #000;
-    color:#fff;
+#hc_table thead tr:first-child th{
+    background-color: #000 !important;
+    color:#fff !important;
+    border-color: #fff;
 }