FAQ accordion responsvie with bug

Hey dev, this project was a little complicated to solve, but I found a very simple solution that solved the issue of showing and hiding the content, but there is a bug in my project, the bug is that as soon as a user clicks on another content to showing the previous one would have to disappear, but that doesn't happen, I've tried a lot of things but I can't apply this functionality, if you can give suggestions I'll accept it, thanks