@media screen and (max-width: 768px) {
    .list, input, .box-select {
        flex: 0 0 30%;
    }
}

@media screen and (max-width: 576px) {
    .list, input, .box-select {
        flex: 0 0 48%;
    }

    input[name="q"] {
        flex: 0 0 100%;
    }
}