.portfolio-gallery{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.row {
    display: -ms-flexbox; /* IE10 */
    display: flex;
    -ms-flex-wrap: wrap; /* IE10 */
    flex-wrap: wrap;
    padding: 2rem 4px;
    width: 85%;
    background-color: var(--primary-color-20pct);
}

.column {
    -ms-flex: 33%; /* IE10 */
    flex: 33%;
    max-width: 33%;
    padding: 0 4px;
}

.column img {
    margin-top: 8px;
    vertical-align: middle;
    width: 100%;
}

@media screen and (max-width: 680px) {
    .column {
        -ms-flex: 100%;
        flex: 100%;
        max-width: 100%;
    }

    .row {
        width: 100%;
    }
}