.swift

 @State private var couponId: Int = 0
    
    var body: some View {
        
        ScrollView {
            
            VStack(spacing: -50) {
                
                ForEach(1...20, id: \.self) { index in
                    CouponCell()
                        .zIndex(couponId == index ? 2 : 0)
                       .animation(.spring())
                        .onTapGesture {
                            withAnimation {
                                couponId = index
                            }
                        }
                }
            }
            
            .padding().frame(maxWidth: .infinity, maxHeight: .infinity)