@media only screen and (max-width: 2400px) {
    .item {
        width: 33.3% !important;
    }
}
@media only screen and (max-width: 1600px) {
    .item {
        width: 50% !important;
    }
}
@media only screen and (max-width: 800px) {
    .item {
        width: 100% !important;
    }
}