.cards-grid .column {
    display: flex;
  }
  /* make the card inside fill that flex container vertically */
  .cards-grid .column .card {
    display: flex;
    flex-direction: column;
    flex: 1;
  }
  /* let the text/content area expand to push the card to full height */
  .cards-grid .column .card .content {
    flex: 1;
  }