摘要： css: <styletype="text/css">*{margin:0;padding:0;border:0;}body{font-family:arial,宋体,serif;font-size:12px;}.navRoot{list-style-type:none;background:#666;height:30px;}.navRootli{position:relative;height:30px;line-height:30px;}.navRootlia:link,.navRootlia:visited{display:block;text-deco 阅读全文