diff --git a/source/packages/com_mokosuitebackup/media/css/runbackup.css b/source/packages/com_mokosuitebackup/media/css/runbackup.css
index f29dea3a..54810052 100644
--- a/source/packages/com_mokosuitebackup/media/css/runbackup.css
+++ b/source/packages/com_mokosuitebackup/media/css/runbackup.css
@@ -27,9 +27,11 @@ body {
 	padding: 0 1rem;
 }
 
-/* overflow:hidden clips the full-bleed bar to the card's rounded corners. */
-.msb-runbackup .card {
+/* overflow:hidden clips the full-bleed bar to the card's rounded corners.
+   The card is a gray panel on the black backdrop. */
+.msb-runbackup > .card {
 	overflow: hidden;
+	background-color: var(--bs-gray-400, #ced4da);
 }
 
 .msb-rb-progress {