@media (min-width: 1900px) {


}
@media screen and (max-width: 1640px) {

}

@media screen and (max-width: 1440px) {
    .nav li a {
        font-size: 16px;

    }
    .bannerSwiper {
        height:450px;
    }
}

@media screen and (max-width: 1366px) {

}

@media screen and (max-width: 1200px) {

}

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

}

@media screen and (max-width: 450px) {


}