.lp-builder .layout--twocolsimple {
  display: flex;
}

.lp-builder .layout--twocolsimple > .layout__region {
  flex: 0 1 100%;
}

.layout--twocolsimple { grid-template-columns: repeat(1, minmax(0, 1fr)); }

@media screen and (min-width: 768px) {
  .lp-builder .layout--twocolsimple > .layout__region {
    flex: 0 1 50%;
  }
  .layout--twocolsimple { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}