diff --git a/expanding-cards/style.css b/expanding-cards/style.css
index ac1ed82..a6fe024 100644
--- a/expanding-cards/style.css
+++ b/expanding-cards/style.css
@@ -30,7 +30,7 @@ body {
   flex: 0.5;
   margin: 10px;
   position: relative;
-  transition: flex 0.7s ease-in;
+  -webkit-transition: all 700ms ease-in;
 }
 
 .panel h3 {