Template:Infobox/Columns/styles.css

/* TODO: Remove .infobox when element selectors in Common.css are removed as
 * we are overriding text-align: center on .infobox .infobox-full-data here
 */
.infobox .infobox-columns {
    display: flex;
    text-align: left;
}

.infobox-columns > div {
    box-sizing: border-box;
    width: 50%;
    padding: 2px;
}

.infobox-columns-3 > div {
    width: 33.33%;
}

.infobox-columns-4 > div {
    width: 25%;
}

.infobox-columns > div:not(:first-child) {
    border-left: 1px dotted #aaa;
    padding-left: 5px;
}