Unity Spinning Cube

using UnityEngine;
using System.Collections;

public class Spinner : MonoBehaviour {

   public  GameObject cubespinner;
    // Use this for initialization
    void Start () {
        cubespinner = GameObject.Find("Cube");
    }

    // Update is called once per frame
    void Update () {
        if (Input.GetKey(KeyCode.LeftArrow))
        {
            cubespinner.transform.Rotate(0, 0, 60 * Time.deltaTime);
        }
        if (Input.GetKey(KeyCode.RightArrow))
        {
            cubespinner.transform.Rotate(0, 0, -60 * Time.deltaTime);
        }
        if (Input.GetKey(KeyCode.DownArrow))
        {
            cubespinner.transform.Translate(0, -10 * Time.deltaTime, 0);
        }
        if (Input.GetKey(KeyCode.UpArrow))
        {
            cubespinner.transform.Translate(0, 10 * Time.deltaTime, 0);
        }
    }
}