.centrar {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 80vh;
  }
  .cuerpo {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  @media (max-width: 900px) {
    .cuerpo {
      display: grid;
      grid-template-columns: 1fr;
    }
  }