@media screen and (max-width: 1600px) {
    .logo_1 {
        width: 35%;
        padding-top: 15px;
    }
    .logo_1 img {
        width: 100%;
    }
    .header .h-nav li {
        margin-right: 15px !important;
    }
    .header .h-nav li > a {
        font-size: 15px !important;
    }
    .w1600, .w1400{
        width: 90% !important;
    }
    .index .about .box .txt {
        width: 40% !important;
    }
    .index .about .box .txt p.con {
        font-size: 15px !important;
    }
}
@media screen and (max-width: 1500px) {
    .logo_1 {
        width: 35%;
        padding-top: 15px;
    }
    .logo_1 img {
        width: 100%;
    }
    .header .h-nav li {
        margin-right: 15px !important;
    }
    .header .h-nav li > a {
        font-size: 15px !important;
    }
    .w1600, .w1400{
        width: 90% !important;
    }
    .index .about .box .txt {
        width: 45% !important;
    }
    .index .about .box .txt p.con {
        font-size: 15px !important;
    }
    .index .about .box .img {
        width: 600px !important;
        height: 375px !important;
        margin-top: 100px !important;
    }
    .header .h-nav li > a {
        line-height: 90px !important;
    }
}