Looking at this Pen, I'm trying to achieve that if an input-field is checked only the element with the class "js-booking-list__header" which is before the input-field should get a class added. But all other elements with the class "js-booking-list__header" which are in DOM after the the checked input-field shouldn't get the new class.

Only previous header should get a new class

However it's not working as it should.

What am I doing wrong?

Thanks