change(listing): color only the background of the summary template no…

…t all listing

src/less/listing-cards.less

@@ -141,7 +141,7 @@ each(range(5), {
   --background-color: #fff;
 }
 
-.listing {
+.listing.summary {
   background-color: var(--bg-color, #fff);
   color: var(--text-color, @tertiaryColor);
 }