.owl-carousel .ow-client-logo img {
    height: auto;
}

.row-flex {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    flex-wrap: wrap;
}

.row-flex > [class*='col-'] {
    display: flex;
    flex-direction: column;
}