#row {
    display: flex;
    flex-wrap: wrap;
    padding: 0 4px;
    vertical-align: middle;
}

.column {
    margin-top: 0;
    max-width: 100%;
    vertical-align: middle;
}

.column img {
padding-bottom: 10px;
width: 100%;
}

@media only screen and (min-width:768px) {
    .column {
        max-width: 50%;
        padding: 0 6px;
    }

    #row {
        padding: 0 6px;
    }
}    


@media only screen and (min-width: 1200px) {
    .column {
        max-width: 25%;
    }
}