.layout--threecol-new {
  display: flex;
  flex-wrap: wrap;
}

.layout--threecol-new > .layout__region {
  flex: 0 1 100%;
}

@media screen and (min-width: 768px) {
  .layout--threecol-new > .layout__region--column {
    flex: 0 1 33.3333%;
  }
}