HtmlWindows Size

[Fact]

        public static void CreateBrowserEvent(object[] args)
        {
            HtmlWindow customBrowser = new HtmlWindow("http://localhost");
            Cursor.Visible = true;
        }

how to change width and height for customBrowser?

[#YokoKimura]

body {
	width: ..?;
  	height: ..?;
};

?