diff --git a/css-cookbook/card--download.html b/css-cookbook/card--download.html
index 24abbdc1..898a3f58 100644
--- a/css-cookbook/card--download.html
+++ b/css-cookbook/card--download.html
@@ -28,7 +28,7 @@
       .cards {
         display: grid;
         grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
-        grid-gap: 20px;
+        gap: 20px;
         max-width: 800px;
         margin: 1em auto;
       }