小米官网css3导航菜单代码_html/css_WEB-ITnose

<div class="nav">      <ul>          <li><a href="#">首页</a></li>          <li>              <a href="#">                  小米手机                  <div class="xs">                      <div class="xiao"></div>                      <img  src="img/1.jpg" / alt="小米官网css3导航菜单代码_html/css_WEB-ITnose" >                  </div>              </a>          </li>          <li>              <a href="#">                  红米                  <div class="xs">                      <div class="xiao"></div>                      <img  src="img/2.jpg" / alt="小米官网css3导航菜单代码_html/css_WEB-ITnose" >                  </div>              </a>          </li>          <li><a href="#">小米平板</a></li>          <li><a href="#">小米电视</a></li>          <li>              <a href="#">                  盒子                  <div class="xs">                      <div class="xiao"></div>                      <img  src="img/3.jpg" / alt="小米官网css3导航菜单代码_html/css_WEB-ITnose" >                  </div>              </a>          </li>          <li>              <a href="#">                  路由器                  <div class="xs">                      <div class="xiao"></div>                      <img  src="img/4.jpg" / alt="小米官网css3导航菜单代码_html/css_WEB-ITnose" >                  </div>              </a>          </li>          <li><a href="#">合约机</a></li>          <li><a href="#">服务</a></li>          <li><a href="#">社区</a></li>      </ul>  </div>

* {            margin: 0px;            padding: 0px;        }         .nav {            position: relative;            width: 994px;            height: 52px;            background: #404144;            margin: 0 auto;        }             .nav li {                list-style: none;                float: left;                line-height: 50px;            }                 .nav li a {                    display: block;                    text-decoration: none;                    color: #FFFFFF;                    padding: 0px 15px;                    font-family: "微软雅黑";                }                     .nav li a:hover .xs {                        display: block;                    }                     .nav li a:hover {                        background: #333333;                    }                     .nav li a .xs {                        border: 1px solid #cccccc;                        border-top: none;                        display: none;                        width: 992px;                        background: #FFFFFF;                        position: absolute;                        top: 50px;                        left: 0px;                    }                         .nav li a .xs .xiao {                            position: absolute;                            top: -8px;                            border-left: 8px solid transparent;                            border-right: 8px solid transparent;                            border-bottom: 8px solid #FFFFFF;                            width: 0px;                            height: 0px;                            z-index: 999;                        }                 .nav li:nth-child(1) .xiao {                    left: 20px;                }                 .nav li:nth-child(2) .xiao {                    left: 98px;                }                 .nav li:nth-child(3) .xiao {                    left: 177px;                }                 .nav li:nth-child(4) .xiao {                    left: 255px;                }                 .nav li:nth-child(5) .xiao {                    left: 348px;                }                 .nav li:nth-child(6) .xiao {                    left: 427px;                }                 .nav li:nth-child(7) .xiao {                    left: 496px;                }                 .nav li:nth-child(8) .xiao {                    left: 576px;                }                 .nav li:nth-child(9) .xiao {                    left: 646px;                }                 .nav li:nth-child(10) .xiao {                    left: 706px;                }