SwitchContentController function in HomeViewController

HomeViewController.swift

  private func switchContentController(_ destinationVC: UIViewController){
      destinationVC.view.frame = CGRect(
        x: 0, 
        y: 0, 
        width: self.containerView.frame.width, 
        height: self.containerView.frame.height
      )
      self.containerView.addSubview(destinationVC.view)
  }