@media (max-width: 880px){
  .grid-cards.cols-4, .diffs-grid, .stats-grid{grid-template-columns:repeat(2,1fr);}
  .split, .split.narrow-left{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr;}
  .frow.two{grid-template-columns:1fr;}
}
@media (max-width: 560px){
  .grid-cards.cols-4, .grid-cards.cols-2, .diffs-grid, .stats-grid{grid-template-columns:1fr;}
}