diff --git a/scss/_card.scss b/scss/_card.scss
index f4fca4c373..9c38480e7a 100644
--- a/scss/_card.scss
+++ b/scss/_card.scss
@@ -12,6 +12,9 @@
 }
 
 .card-block {
+  // Enable `flex-grow: 1` for decks and groups so that card blocks take up
+  // as much space as possible, ensuring footers are aligned to the bottom.
+  flex: 1 1 auto;
   padding: $card-spacer-x;
 }
 
@@ -204,10 +207,6 @@
       margin-bottom: 0; // Margin balancing
       margin-left: $card-deck-margin;
     }
-
-    .card-block {
-      flex-grow: 1;
-    }
   }
 }