Dimmed the column header labels and added a bottom border under the sticky header, so it reads as its own band instead of the same weight as the row data

packages/widgets/src/media-server/component.module.css

@@ -31,6 +31,7 @@
 
 .tableViewport :global(th) {
   background-color: var(--background-color);
+  border-bottom: 1px solid var(--border-color);
 }
 
 .sortButton {