.search-box {
    max-width: 870px;
    width: 100%;
    margin: 40px 0;
}
.search-box .form .form-row {
    margin-bottom: 0;
}
.search-box .form .form-row.row .form-btn.row {
    padding: 20px;
    width: 255px;
}
@media screen and (max-width: 500px) {
    .search-box .form .form-row.row{
        flex-direction: column;
    }
    .search-box .form .form-row.row .form-btn.row {
        margin-top: 20px;
    }
}