Screen Fade

Fade.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Fade : MonoBehaviour
{

    CanvasGroup group;
    float timer;
    float fadeOutTimer;
    bool startFadeOut;
    [Range(1f,5f)]
    public float seconds = 1f;

    void Awake()
    {
        group = GetComponent<CanvasGroup>();
        group.alpha = 1f;
        
    }

    void Update()
    {
        if (timer < 1)
        {
            timer += Time.deltaTime / seconds  ;
            group.alpha = 1 - timer;
        }else
        {
            group.alpha = 0f;
        }

        if (Input.GetKeyDown(KeyCode.Space))
        {
            startFadeOut = true;
        }

        if (startFadeOut)
        {
            if (fadeOutTimer < 1)
            {
                fadeOutTimer += Time.deltaTime / seconds ;
                group.alpha = fadeOutTimer;

            }else
            {
                group.alpha = 1f;
                print("load scene!!");
            }

        }


    }
}