@media (max-width: 980px){
  .heroGrid{grid-template-columns:1fr}
  h1{font-size:40px}
  .flow{grid-template-columns:1fr 1fr}
  .grid2{grid-template-columns:1fr}
  .tiles{grid-template-columns:1fr}
}

@media (max-width: 520px){
  h1{font-size:34px}
  .flow{grid-template-columns:1fr}
}