nav置顶和footer置低 2014/12/17 36257 清华大佬耗费三个月吐血整理的几百G的资源,免费分享!....>>> nav{ height:50px; width:100%; position:fixed; background:#9b95c9; top:0; left:0; right:0; z-index:999; } footer{ width:100%; height:30px; background:#aaa; left:0; right:0; bottom:0; position:fixed; }