             view:nextButton,
             constant:kButtonsWidth)
         
-        addConstraints(constraintsEffect)
+        addConstraints(constraintsBlur)
         
         addConstraints([
             layoutBackTop,

        clipsToBounds = true
        self.controller = controller
        
        let blurEffect:UIBlurEffect = UIBlurEffect(style:UIBlurEffectStyle.light)
        let visualEffect:UIVisualEffectView = UIVisualEffectView(
            effect:blurEffect)
        visualEffect.translatesAutoresizingMaskIntoConstraints = false
        visualEffect.clipsToBounds = true
        visualEffect.isUserInteractionEnabled = false
        
        let backButton:UIButton = UIButton()
        backButton.translatesAutoresizingMaskIntoConstraints = false

        icon.contentMode = UIViewContentMode.center
        icon.image = #imageLiteral(resourceName: "assetCameraFilter")
        
        addSubview(blur)
        addSubview(icon)
        addSubview(backButton)
        addSubview(nextButton)
        
        let constraintsBlur:[NSLayoutConstraint] = NSLayoutConstraint.equals(
            view:blur,
            toView:self)
        
        let layoutBackTop:NSLayoutConstraint = NSLayoutConstraint.topToTop(
