@media screen and (max-width:1830px){

}


@media screen and (max-width:1700px) {


}

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


}


@media screen and (max-width:1560px){


}


@media screen and (max-width:1440px){

    .w{ width: 1280px;}

}

@media screen and (max-width:1300px){

    .w{ width: 1200px;}

}



@media screen and (max-width:834px){



}


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


}