JoinViewController+Constrains.swift

extension JoinViewController {
    func setupConstraints() {
        view.addConstraints([
            patientButton.centerXAnchor.constraint(equalTo: view.centerXAnchor),
            patientButton.centerYAnchor.constraint(equalTo: view.safeAreaLayoutGuide.centerYAnchor, constant: -100),
            doctorButton.centerXAnchor.constraint(equalTo: view.centerXAnchor),
            doctorButton.centerYAnchor.constraint(equalTo: patientButton.centerYAnchor, constant: 100)
        ])
    }
}