* { margin:0; padding:0; -webkit-box-sizing:border-box; -moz-box-sizing:border-box; box-sizing:border-box; } ul,ol,li { list-style:none; } .nav { width:400px; height:40px; background-color:papayawhip; } .nav_li { float:left; width:25%; height:100%; border:1px solid brown; margin-left:-1px; text-align:center; line-height:40px; } .con { height:400px; overflow:hidden; width:400px; } .con_li { width:400px; height:400px; display:none; }
更新时间:2020-03-13 09:57:03