.site-grid {
   grid-template-columns: [full-start] minmax(0,1fr) [main-start] repeat(4,minmax(0,19.875rem)) [main-end] minmax(0,1fr) [full-end];
}

/*
 
    .site-grid {
      grid-template-areas: ". banner banner banner banner ." ". top-a top-a top-a top-a ." ". top-b top-b top-b top-b ." ". side-l side-l side-l side-l ." ". side-r side-r side-r side-r ."  ". comp comp comp comp ." ". bot-a bot-a bot-a bot-a ." ". bot-b bot-b bot-b bot-b .";
    }
 */

/*
  @media (min-width: 992px) {
    .site-grid {
      grid-template-areas: ". banner banner banner banner ." ". top-a top-a top-a top-a ." ". top-b top-b top-b top-b ." ". side-l comp comp side-r ." ". bot-a bot-a bot-a bot-a ." ". bot-b bot-b bot-b bot-b .";
    }
  }

*/