What are the ways to add a rotation constraint to Unity3D?

Question

Unity

After searching the entire Internet, reading the Unity manual, I was not able to make an object rotation constraint.

It is necessary that the player can turn as much as possible to the right by 90 degrees and also to the left by 90 degrees.

How can you limit rotation?

Answer 1

поворот = Mathf.Max(-90, Mathf.Min(90, поворот))