尺寸可以參考FB官方 https://www.facebook.com/business/ads-guide/app-engagement/?tab0=%E6%A1%8C%E9%9D%A2%E7%89%88%E6%87%89%E7%94%A8%E7%A8%8B%E5%BC%8F&toggle1=%E7%9B%B8%E7%89%87