.header{
    width: 100%;
    background-color: #ffffff;
    position: fixed;
    z-index: 100;
}
.header_line{
    height: 12px;
    background-color: #253C98;
}
.header_con{
    margin: auto;
}
.logo{
    width: 184px;
    height: 115px;
    background-color: #ffffff;
    margin-top: -12px;
}
.logo>img{
    width: 100%;
    height: 100%;
}
.header_nav{
    width: 990px;
    height: 103px;
    line-height: 103px;
    display: inline-flex;
}
.header_nav>div{
    width: 123.75px;
    text-align: center;
    font-size: 16px;
    color: #252525;
}