body {
  background: #fff;
}

main {
  display: grid;
  grid-template-rows: auto 200px auto;
  grid-template-columns: 100%;
}

.banner {
  grid-column: 1;
  grid-row: 2;
  background-color: #000;
}
  .index-intestazione {
    grid-column: 1;
    grid-row: 2;
    padding: 1rem;
  }
   .cruises-list {
    grid-row: 3;
  }
.index-mesi {
  grid-column: 1;
  grid-row: 4;
  padding: 1rem;
}

.index-txt {
  grid-column: 1;
  grid-row: 5;
  padding: 1rem;
  max-height: none;
  /*overflow-y: auto;*/
  border-bottom: 1px dotted #666;
  border-top: 1px dotted #666;
  background-color: #fff;
}


@media(min-width: 1024px) {
  body {
    background: linear-gradient(#18baad 200px, #fff 500px);
  }

  main {
    grid-template-columns: 1fr minmax(900px, 1400px) 1fr;
    grid-template-rows: 300px 128px auto;
  }

  .banner {
    grid-column: 1/4;
    grid-row: 1;
    background-color: #000;
  }
  .index-intestazione {
    grid-column: 1 / 3;
    grid-row: 2;
    padding: 0;
  }
  .index-mesi {
    grid-column: 1;
    grid-row: 3;
    padding: 0;
  }
 .cruises-list {
    grid-row: 3 / 8;
  }
  .index-txt {
    grid-column: 1;
    grid-row: 4;
    padding: 0;
    max-height: none;
    overflow-y: visible;
    border-bottom: 0;
    border-top: 0;
    background-color: transparent;
  }


}