屏蔽浏览器默认样式 user agent stylesheet时间:2023-03-08 23:59:43 user agent stylesheet <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> table{ border-collapse: collapse; border-spacing: ; }