abstract：*{margin: 0px;padding: 0px;} ul{list-style: none;} a{text-decoration: none;color:#fff;} .nav{width: 150px;height: 700px;background: #323232;margin-top: 10px;ma
*{margin: 0px;padding: 0px;} ul{list-style: none;} a{text-decoration: none;color:#fff;} .nav{width: 150px;height: 700px;background: #323232;margin-top: 10px;margin-left: 100px;} .nav .fot{height: 45px;line-height: 45px;text-align: center;border-bottom: 1px solid #5a5a5a;position: relative;} .nav .one{height: 45px;line-height: 45px;text-align: center;border-bottom: 1px solid #5a5a5a;position: relative;} .nav .one i{float: right;margin-right:8px;margin-top: 15px;} .nav .one:hover{background: #be1616;} .nav .one ul{position: absolute;left: 150px;top: 0px;border-left: 1px solid #5a5a5a;border-right: 1px solid #5a5a5a;} .two{width: 150px;height: 45px;line-height: 45px;float: left;text-align: center;border-bottom: 1px solid #5a5a5a;background: #323232;color:#fff;} .two:hover{background: #be1616;} .three{width: 300px;color: #fff;background: #323232;padding: 10px 20px;position: absolute;left: 151px;top:0px;} p{text-indent: 2em;line-height: 20px;text-align: left;}
按钮内容选择
本章复习了之前学到的hide()，slideDown()，还有find(),垂直三级导航功能还是不错的，也可以用到水平导航上，还是要多练习，避免后期忘了
Correcting teacher：查无此人Correction time：2018-12-27 09:27:41
Teacher's summary：做的非常好。
