Help with Memory Match layout?

I am going through the Memory Match Tutorial written by kittiewan.

The bundle was not available for download, so I just grabbed a bunch of playing cards from the web.

I finished step 2b that should layout the cards, but the cards don't fit correctly in the window.

I have re-checked the coding, but don't see the problem.

Window size is 640,480.

here is event sheet

I think your layout size is bigger than your window size