/* xong */
@media screen and (max-width: 319px){
    .item-hot{width: 100%;}
}

@media (min-width: 320px) and (max-width: 480px) {
    .item-hot{width: 100%;}
}

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

}

@media (min-width: 768px) and (max-width: 960px) {

}
@media (min-width: 1020px) and (max-width: 1200px) {

}