abstract：*{margin:0px;padding: 0px}li{list-style: none;}a{text-decoration: none;color: #ccc;cursor:pointer;}.clear{clear:both;}.header{background: #333;width:100%;height:40px; }.menu{width:1226px;height:40px;m
*{margin:0px;padding: 0px}
li{list-style: none;}
a{text-decoration: none;color: #ccc;cursor:pointer;}
.clear{clear:both;}
.header{background: #333;width:100%;height:40px; }
.menu{width:1226px;height:40px;margin: 0px auto;line-height: 40px;font-size: 12px;}
.header_left{float: left;}
.header_left li{float: left;}
.header_left li a:hover{color:#fff;}
.header_left li span{margin: 0px 10px;color:#6c6d69;}
.header_right{float: right;}
.header_right li{float: left;}
.header_right li a[href="#"]:hover{color:#fff; }
.header_right li span{margin: 0px 5px;color: #6c6d69}
.header_right_li {width: 120px;height: 40px;text-align: center;background: #424242;position:relative;color: #aaa;margin-left: 10px;}
.header_right_li div{width: 300px;height: 90px;background: #fff;color: #ccc;position: absolute;right: 0px;display: none;}
.header_right_li:hover div{display: block;}
.header_right_li:hover{background: #fff;}
.header_right_li:hover a{color: #ff6a00;}
/*主体样式*/
.content{width:1226px;margin: 0px auto;}
Correcting teacher：灭绝师太Correction time：2019-01-14 17:21:45
Teacher's summary：学习到全选了你把这个案例放在这里有点不合适吧！全选案例在后面使用的比较多，要好好完成奥！