.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr; 
  grid-column-gap: 0px;
}

.source {
  font-size: max(1vw, 1vh);
}

.columns {
  display:flex;
  flex-direction: row;
  justify-content: center;
  align-items: start;
  gap: 1vw;

}

.columns > *  {
    flex-grow: 1;
    flex-shrink: 1;
  }