[C#] Smooth Camera Movement Restrictions

I have this code to move my camera around and restrict is max and min position:

         Vector3 XMaxpos = new Vector3(XMax , transform.position.y, transform.position.z);
         Vector3 XMinpos = new Vector3(XMin , transform.position.y, transform.position.z);
         Vector3 YMaxpos = new Vector3(YMax, transform.position.y, transform.position.z);
         Vector3 YMinpos = new Vector3(transform.position.x , transform.position.y , YMin);
             //Restrict
         if(transform.position.x > XMax)
              transform.position = XMaxpos;// * Time.deltaTime);
         if(transform.position.x < XMin)
             transform.position = XMinpos;// * Time.deltaTime);
         if(transform.position.z > YMax)
             transform.position = YMaxpos;// * Time.deltaTime);
         if(transform.position.z < YMin)
                transform.position = YMinpos;// * Time.deltaTime);
         //Move
            if(Input.GetKey(KeyCode.W))
              transform.position = new Vector3(transform.position.x + CameraSpeed * Time.deltaTime, transform.position.y, transform.position.z);
         if(Input.GetKey(KeyCode.S))
             transform.position = new Vector3(transform.position.x - CameraSpeed * Time.deltaTime, transform.position.y, transform.position.z);
         if(Input.GetKey(KeyCode.A))
             transform.position = new Vector3(transform.position.x , transform.position.y , transform.position.z + CameraSpeed * Time.deltaTime);
         if(Input.GetKey(KeyCode.D))
             transform.position = new Vector3(transform.position.x , transform.position.y , transform.position.z - CameraSpeed * Time.deltaTime);

i would like it to bounce back a little, and not be jumpy like it is now when you continue trying to go in a direction. Any ideas?