@media only screen and (max-width:320px) {

}
@media only screen and (min-width:321px) and (max-width:480px) {

}
@media only screen and (min-width:481px) and (max-width:768px) {

}
@media only screen and (min-width:769px) and (max-width:1024px) {

}
@media only screen and (min-width:1025px) {

}