@media screen and (min-width:1020px){}


@media screen and (max-width:1020px){}


@media screen and (max-width:760px){}


@media screen and (max-width:400px) {}


@media screen and (min-width:400px) and (max-width:551px) {}	


@media screen and (min-width:551px) and (max-width:760px) {}


@media screen and (min-width:761px) and (max-width:1020px) {}
.son{}