header nav ul li a{
    font-size: .18rem;
}


.banner-content .text h2{
    font-weight: bold;
}
.banner-content .text h3{
    font-size: .24rem
}
@media screen and ( max-width: 736px){
    header nav ul li a{ font-size: .16rem;}
    .banner-content .text h3{ font-size: .16rem;}
    .culture h2{ font-size: .2rem;}
}