.main{
    padding:50px 50px 100px;
    margin-top: 15px;
    background: #ffffff;
}
.main ul{
    border-bottom: 1px solid #d8d8d8;
    height: 50px;
}
.main ul li{
    margin-top: -1px;
    float: left;
    margin-right: 60px;
    font-size: 14px;
    color: #666666;
    height:50px;
    line-height: 50px;
    border-bottom: 3px solid transparent;
}
.main ul li:hover{
    cursor: pointer;
    border-bottom: 3px solid #686868;
    margin-bottom: 2px;
}
.main_nr{
    margin-top:40px;
    padding-bottom: 40px;
    border-bottom: 1px solid #d8d8d8;
    overflow: hidden;
}
.main_nr dt{
    font-size: 20px;

}
.main_nr dt a{
    font-weight: bold;
    color: #666666;
}
.main_nr dt a:hover{
    color: #333;
    text-decoration: underline;
}
.main_nr dd{
    float: left;
    margin-top: 25px;
    margin-right: 60px;
    font-size: 14px;

}
.main_nr dd a{
    font-weight: bold;
    color: #4e94d1;
}
.main_nr dd a:hover{
    color: #d61b34;
    text-decoration: underline;
}