*{
    padding: 0;
    margin: 0;
    list-style: none;
}
.header{
    width: 1200px;
    /* background-color: antiquewhite; */
    margin: 20px auto;
    /*height: 60px;*/
    text-align: center;
}
/* .header>div{
    float: left;
} */
.nav_top{
    /*float: left;*/
}
.logo_box{
    /*width: 320px;*/
}
.logo_box>*{
    /*float: left;*/

}
.nav_top>*{
    /*float: left;*/
    
}
.logo_img{
    /*width: 60px;*/
    /*height: 60px;*/
    /*margin-right: 25px;*/
    /*width: 255px;*/
    height: 90px;
}
.nav_title{
    font-size: 24px;
    font-weight: bold;
    color: rgba(29, 161, 243, 1);
    margin-top: 6px;
}
.nav_content{
    font-size: 14px;
    margin-top: 4px;
}
.nav_ul{
    width: 560px;
}
.nav_ul li:hover{
    color: rgba(29, 161, 243, 1);
    border-bottom: 2px solid rgba(29, 161, 243, 1);

}
.nav_ul li{
    float: left;
    line-height: 70px;
    margin-right: 100px;
    width: 70px;
    /*border-bottom: 1px solid;*/
    text-align: center;
}
.nav_right{
    line-height: 70px;
    float: right;
    font-size: 14px;
}
.span {
    margin: 0 10px;
}