*{    padding: 0;    margin: 0;    list-style-type: none;}.enter{    width: 420px;    margin:  0 auto;    margin-top:40px;}.enter ul li span{    display:block;    width: 45px;    height: 45px;    float: left;}.enter ul li:first-child span{    background: url("../images/user.jpg") no-repeat;}.enter ul li:nth-child span{    background: url("../images/pwd.jpg") no-repeat;}.enter ul li:last-child span{    background: url("../images/pwd.jpg") no-repeat;}.enter input{    width: 355px;    height: 45px;    padding-left: 10px;    color: #aaaaaa;    margin-bottom: 20px;    border: none;    background: url("../images/use_pwd_bg.jpg") no-repeat;}.enter button{    width: 410px;    height: 50px;    border: none;    background: url("../images/login.jpg");    font-size: 18px;    color: #ffffff;    cursor: pointer;}.nav_title{    width:5%;    border-right: #999999 1px solid;    background-color: #424651;}.nav_title>ul>li>a{    display: block;    height: 60px;    line-height: 60px;    background-color: #2F3035;    cursor: pointer;    color: #ffffff;}.nav{    display: block;    padding: 10px 50px;}.nav_title>ul>li>a.nav span:last-child{    display: block;    height: 60px;    font-size: 16px;    margin-left: -15px;    padding-left: 15px;    background: url("../images/nav_device.jpg") no-repeat 0px 15px;}.nav_title>ul>li:nth-child(2)>a.nav span:last-child{    background: url("../images/nav_ resource.jpg") no-repeat 0px 15px;}.nav_title>ul>li:nth-child(3)>a.nav span:last-child{    background: url("../images/nav_info.jpg") no-repeat 0px 15px;}.nav_title>ul>li:nth-child(4)>a.nav span:last-child{    background: url("../images/nav_client.jpg") no-repeat 0px 15px;}.nav_title>ul>li:nth-child(5)>a.nav span:last-child{    background: url("../images/nav_system.jpg") no-repeat 0px 15px;}.nav_title>ul>li>ul>li a{    cursor: pointer;}.nav_title>ul>li>ul>li a.nav span:last-child{    height: 50px;    line-height: 50px;    color: #ffffff;}.main_head{    width: 100%;    height:90px ;    background: url("../images/head.png") no-repeat;    position: fixed;    top: 0;    left: 0;    z-index: 100000;}.main_head div{    line-height: 90px;    margin-right: 20px;    float: right;    color: #ffffff;}.main_head div span:first-child{    font-size: 12px;    margin-right: 15px;}.main_head div span:last-child{    padding: 5px 20px;    background: #FE9917;    cursor: pointer;}#table{    width: 100%;    position: relative;    top: 87px;    left: -3px;}.nav_title>div{    height:200px;    line-height: 40px;    background-color: #FE9917;}.main_date span{    display: block;    width: 200px;    color: #ffffff;}.main_date span:first-child{    font-size: 12px;    padding-top: 10px;}.main_date span:first-child+span{    font-size:60px;    margin-top: 15px;}.main_date span:last-child{    font-size: 30px;    margin-top: 25px;}.logo{    display: block;    width: 230px;    height: 47px;    /*border: 1px solid red;*/    cursor: pointer;    position: relative;    left: 35px;    top:20px;}