html简单导出word,如何设置纸张横向?

现在我项目中的报表导出是用的
// //Word文件头
// HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(filename + ".doc", System.Text.Encoding.UTF8));
// HttpContext.Current.Response.ContentType = "application/ms-word";
// HttpContext.Current.Response.Charset = "UTF-8";
// HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF8;
// Page.EnableViewState = false;
// //输出
// HttpContext.Current.Response.Write(html);
// HttpContext.Current.Response.Flush();
这种简单导出,现客户要求打印的时候纸张是横向的,请问怎么解决

可以试试css3旋转body90度?