.header_top{
    height: 5%;
    background: black;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 6%;
    font-size:14px
}
.header_top .top_right span{
    padding: 0 10px;
}
.header_top .top_right span:hover{
    cursor: pointer;
}
.header_top .top_right span img{
    margin-right: 3px;
    width: 14px;
    height: 14px;
}
.navbox{ 
    height: 100px; 
    margin: 0 auto;
    padding: 0 6%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.t_first{
    margin-right: 30px;
}


.nav{
    display: flow-root;
    height: 100px;
    float: right;
}
.nav li{
    height: 100px;
    /*display: flex;*/
    /*align-items: center;*/
    float: left;
    margin-right: 20px;
}
.nav li:last-child{margin-right: 0;}
.nav li a{
    display: block;
    color: #333;
    height: 97px;
    line-height: 100px;
    text-align: center;
}
.nav .on{
    border-bottom: 3px solid #26add3;
}
.nav li a:hover{    
    border-bottom: 3px solid #26add3;
}
.menu,.nav2{
    display: none;
}