diff --git a/core/modules/block/css/block.admin.css b/core/modules/block/css/block.admin.css
index 407c7c0..42ef70d 100644
--- a/core/modules/block/css/block.admin.css
+++ b/core/modules/block/css/block.admin.css
@@ -1,13 +1,3 @@
-#blocks tr.region-title td {
-  font-weight: bold;
-}
-#blocks tr.region-message {
-  font-weight: normal;
-  color: #999;
-}
-#blocks tr.region-populated {
-  display: none;
-}
 .block-region {
   background-color: #ff6;
   margin-top: 4px;
diff --git a/core/modules/system/css/system.module.css b/core/modules/system/css/system.module.css
index 331d3e9..5eab323 100644
--- a/core/modules/system/css/system.module.css
+++ b/core/modules/system/css/system.module.css
@@ -70,6 +70,18 @@
 body.drag {
   cursor: move;
 }
+tr.region-title {
+  font-weight: bold;
+}
+tr.region-message {
+  color: #999;
+}
+tr.region-populated {
+  display: none;
+}
+tr.add-new .tabledrag-changed {
+  display: none;
+}
 .draggable a.tabledrag-handle {
   cursor: move;
   float: left; /* LTR */