static void Main()
{
ElementBuilder b = new ElementBuilder("b");
//div.Attributes.Add("id", "header");
Console.WriteLine(b);
Console.WriteLine(b*2);
b.AddAttributes("id", "header");
Console.WriteLine(b);
b.AddAttributes("class", "menu");
Console.WriteLine(b);
b.AddContent("Text");
Console.WriteLine(b);
}