             toView:self)
         let layoutBackWidth:NSLayoutConstraint = NSLayoutConstraint.width(
             view:backButton,
-            constant:kBackWidth)
+            constant:kButtonsWidth)
         
         let layoutIconTop:NSLayoutConstraint = NSLayoutConstraint.topToTop(
             view:icon,

        let layoutIconWidth:NSLayoutConstraint = NSLayoutConstraint.width(
            view:icon,
            constant:kIconWidth)
        
        addConstraints([
            layoutBackTop,

            action:#selector(actionBack(sender:)),
            for:UIControlEvents.touchUpInside)
        
        let nextButton:UIButton = UIButton()
        nextButton.translatesAutoresizingMaskIntoConstraints = false
        nextButton.setImage(
            #imageLiteral(resourceName: "assetGenericNext").withRenderingMode(
                UIImageRenderingMode.alwaysOriginal),
            for:UIControlState.normal)
        nextButton.setImage(
            #imageLiteral(resourceName: "assetGenericNext").withRenderingMode(
                UIImageRenderingMode.alwaysTemplate),
            for:UIControlState.highlighted)
        nextButton.imageView!.contentMode = UIViewContentMode.center
        nextButton.imageView!.tintColor = UIColor(white:0, alpha:0.2)
        nextButton.imageView!.clipsToBounds = true
        
        let icon:UIImageView = UIImageView()
        icon.isUserInteractionEnabled = false
        icon.translatesAutoresizingMaskIntoConstraints = false
