@State var selection = 0
var body: some View {
    HStack {
        BackArrow()
            .frame(width: CGFloat(30), height: CGFloat(30))
            .foregroundColor(Color(UIColor(red: 0.30, green: 0.30, blue: 0.30, alpha: 0.4)))
            .if(selection == 0) { $0.background(Color.white) }
            .if(selection != 0) { $0.background(Color.black) }
            .onTapGesture {
                withAnimation(.spring(response: 0.5)) {
                    self.selection = 0
                }
            }

        ForwardArrow()
            .frame(width: CGFloat(30), height: CGFloat(30))
            .foregroundColor(Color(UIColor(red: 0.30, green: 0.30, blue: 0.30, alpha: 0.4)))
            .if(selection == 1) { $0.background(Color.white) }
            .if(selection != 1) { $0.background(Color.black) }
            .onTapGesture {
                withAnimation(.spring(response: 0.5)) {
                    self.selection = 1
                }
            }
    }
}