Issue #1662954 by balis_m, mjonesdinero, kalpaitch, IshaDakota, kerasai,...

Issue #1662954 by balis_m, mjonesdinero, kalpaitch, IshaDakota, kerasai, ckrina, BarisW | ZenDoodles: Use less-specific tabledrag selectors.

core/modules/block/css/block.admin.css

-#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;

core/modules/field_ui/css/field_ui.admin.css

@@ -10,9 +10,6 @@
 [dir="rtl"] .field-ui-overview .add-new .label-input {
   float: right;
 }
-.field-ui-overview .add-new .tabledrag-changed {
-  display: none;
-}
 .field-ui-overview .add-new .description {
   margin-bottom: 0;
   max-width: 250px;
@@ -30,9 +27,6 @@
 .field-ui-overview .region-message td {
   font-style: italic;
 }
-.field-ui-overview .region-populated {
-  display: none;
-}
 .field-ui-overview .region-add-new-title {
   display: none;
 }

core/modules/system/css/system.module.css

@@ -79,6 +79,18 @@
 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 */