Kant's Ideal Moral Law VS Kelsen's Pure Theory of Law

Yaar, main don't understand yeh difference. Kafi confused hoon. Kaise hai dono ke idea of law alag? Kelsen ke pure theory of law ka kya connection hai Kelsen ke positivism se? Kya yeh dono theories kaafi similar hai? Maine padha hai Kelsen kuchh article dono mein, lekin dono ke beech koi connection nahi pata chala. To koi bhai mujhe batayega ki kaise kaise in dono theories ke beech link hai. Kafi confused hoon, plzzzz help.