@IBAction func respondOfItemButtonTouchUpInside(_ sender: UIButton) {
        switch sender {
        case firstItemButton:
            firstItemButton.setImage(UIImage(named:"1"), for: .normal)
        case secondItemButton:
            secondItemButton.setImage(UIImage(named:"2"), for: .normal)
        case thirdItemButton:
            thirdItemButton.setImage(UIImage(named:"3"), for: .normal)
        case fourthItemButton:
            fourthItemButton.setImage(UIImage(named:"4"), for: .normal)
        default:
            break
        }
    }

    @IBAction func respondOfItemButtonTouchUpOutside(_ sender: UIButton) {
        switch sender {
        case firstItemButton:
            firstItemButton.setImage(UIImage(named:"1"), for: .normal)
        case secondItemButton:
            secondItemButton.setImage(UIImage(named:"2"), for: .normal)
        case thirdItemButton:
            thirdItemButton.setImage(UIImage(named:"3"), for: .normal)
        case fourthItemButton:
            fourthItemButton.setImage(UIImage(named:"4"), for: .normal)
        default:
            break
        }
    }