.table_item > .row {
    border-bottom: 1px solid currentColor;
}
.table_item:first-child > .row {
    border-top: 1px solid currentColor;
}
@media screen and (min-width:40em){
    .table_item:nth-child(2) > .row {
        border-top: 1px solid currentColor;
    }
}