@media only screen and (max-width: 1000px) {
  .row.row-cols-1 {
    max-width: 90% !important;
  }
}

@media (min-width: 300px) {
  h1 {
  }
}

@media (max-width: 900px) {
  .row {
    max-width: 90%;
    margin-left: auto;
    margin-right: auto;
  }
}