Zoom and Blur Modal Nesting

Hi all,

Just trying to create a modal that zooms and blurs the background back. Based on avgrund by hakim https://lab.hakim.se/avgrund/

I extended it to get several modals to work.

See fiddle: https://jsfiddle.net/postcolonialboy/9jq84p1h/144/

Could anyone please help to get nested multiple modals to again zoom and blur everything further again on popup?