una/template/_layout_align_columns.html

<script>
    $(document).ready(function () {
        if (1 == $('#bx-layout-cell-3 > div').length && 1 == $('#bx-layout-cell-2 > div').length) {
            if ($('#bx-layout-cell-2 .bx-db-container').height() > $('#bx-layout-cell-3 .bx-db-container').height())
                $('#bx-layout-cell-3 .bx-db-container').css('height', $('#bx-layout-cell-2 .bx-db-container').height());
            else
                $('#bx-layout-cell-2 .bx-db-container').css('height', $('#bx-layout-cell-3 .bx-db-container').height());
        }
    });
</script>