@media screen and (min-width: 1250px) {
}

@media screen and (min-width: 1024px) {
}

@media screen and (max-width: 1600px) {
}

@media screen and (max-width: 1450px) {
    .head-nav li {
        padding: 0 42px;
    }

    .pro-md .pro-bd {
        width: 100%;
    }

    .pro-md .left-content {
        width: 950px;
    }

    .header-md {
        width: 1280px;
    }

    .banner-md .swiper-pagination-progressbar {
        width: 1000px;
    }

    .brand-md .brand-bd {
    }

    .brand-md .brand-bd .item:nth-child(6),
    .brand-md .brand-bd .item:nth-child(7) {
        display: none;
    }

    .about-mod-b {
        background-position: -85px 490px;
    }
    .serviceGuarantee-main {
        background: none;
    }
}

@media screen and (max-width: 1350px) {
}

@media screen and (max-width: 1250px) {
}

@media screen and (max-width: 1024px) {
}

@media screen and (max-width: 980px) {
}

@media (max-width: 900px) {
}

@media screen and (max-width: 880px) {
}

@media screen and (max-width: 768px) {
}

@media (max-width: 680px) {
}

@media screen and (max-width: 640px) {
}

@media screen and (max-width: 480px) {
}