[help] How can I make one accordion open at a time?

Hi, I'm having difficulty with my site as when I click to open one accordion, all 3 of them seem to open simultaneously and it doesn't look pleasing whatsoever.

If one of you are able to help me with this i'd be extremely grateful! [pw: advice]

Did you make them with custom code/css? Can you share a link to your site?

5 hours ago, AlexSan said:

Did you make them with custom code/css? Can you share a link to your site?

no i didn't, just 3 separate accordion blocks

indigo-salamander-t2yy.squarespace.com

pass-advice