diff --git a/examples/scroll-marker/index.html b/examples/scroll-marker/index.html
index 00555b8..c27433d 100644
--- a/examples/scroll-marker/index.html
+++ b/examples/scroll-marker/index.html
@@ -18,7 +18,7 @@
         grid-area: main;
         border: 2px solid green;
         overflow: auto;
-        scroll-snap-type: x mandatory;
+        scroll-snap-type: y mandatory;
         scroll-behavior: smooth;
         position: relative;
       }