diff --git a/expanding-cards/style.css b/expanding-cards/style.css
index 4e8e15a..ac1ed82 100644
--- a/expanding-cards/style.css
+++ b/expanding-cards/style.css
@@ -20,7 +20,7 @@ body {
 }
 
 .panel {
-  background-size: auto 100%;
+  background-size: cover;
   background-position: center;
   background-repeat: no-repeat;
   height: 80vh;