public static void Main()
var doc = new HtmlAgilityPack.HtmlDocument();
HtmlWeb web = new HtmlWeb();
doc = web.Load("https://www.technologycrowds.com/2019/06/sha-512-hash-using-c-sharp.html");
var ress = doc.DocumentNode.SelectSingleNode("//*[text()[contains(., 'Working')]]").InnerText;