.text-three-columns .columns {
    margin: 0 -.5rem;
}

.text-three-columns .columns .column {
    float: left;
    margin: 0 .5rem;
    width: calc(33.333% - 1rem);
}

@media (max-width: 991px) {
    .text-three-columns .columns {
        margin: 0;
    }

    .text-three-columns .columns .column {
        float: none;
        margin: 0;
        width: 100%;
    }
}