top down movement unity c#

public float Speed = 5f; 

private void Update()
    {
        var input = new Vector3(Input.GetAxisRaw("Horizontal"), Input.GetAxisRaw("Vertical"), 0);
        Vector3 velocity = input.normalized * Speed;
        transform.position += velocity * Time.deltaTime;
    }public float Speed = 5f; 

private void Update()
    {
        input = new Vector3(Input.GetAxisRaw("Horizontal"), Input.GetAxisRaw("Vertical"), 0);
        Vector3 velocity = input.normalized * Speed;
        transform.position += velocity * Time.deltaTime;
    }