ONLY show the last/most recent repeater item

Hi there,

I currently have all the items in my repeater collapsed until clicked, working perfectly. Now with the same existing functionality of click to expand and click to collapse, I’d like to have the last item in the repeater expanded by default upon load. Unless otherwise clicked.

Note: not connected to DB. Manually passing data to repeater

If any of you experts out there know how to make this happen, huge thanks in advance. Please get back to me at your earliest convenience. Cheers!