nav .navList>ul>li {
    margin-right: 56px;

}
nav .navList .contactBtn
 {
     width: 174px;
 }


@media screen and (max-width: 1560px) {
    nav .navList>ul>li {
            margin-right: 31px;
    }
    
    .advantage .title1 {
        margin-right: 68px;
    }
}

@media screen and (max-width: 1200px) {
        nav .navList .contactBtn {
            width: 157px;
        }
}

@media screen and (max-width: 768px) {
    .pageList a.next {
    width: 100px;
}
}

.productShow .jianjie .btns a {
    width: 258px;
}