.grid-container {
  display: flex;
  flex-direction: column;
  margin: 20px 0;
  counter-reset: index;
}
.grid-container > .grid__cell {
  display: flex;
  flex-direction: column;
  margin: 0 0 20px;
  transition: box-shadow 0.15s cubic-bezier(0.25, 0.8, 0.25, 1), transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);

  justify-content: space-between;
  align-items: flex-start;
}
.grid-container > .grid__cell {
  grid-column-end: span 12;
}
.grid-container > .grid__cell {
  position: relative;
  overflow: hidden;
  background-position: 50% 50%;
  background-size: cover;
}
.grid-container > .grid__cell > section {
  width: 100%;
}
@supports (display: grid) {
  .grid-container {
    display: grid;

    grid-gap: 20px;
    grid-template-columns: repeat(12, 1fr);
    -webkit-grid-template-columns: repeat(12, 1fr);
    -moz-grid-template-columns: repeat(12, 1fr);
    grid-auto-flow: dense;
  }
  .grid-container > .grid__cell {
    margin: 0 0 0;
  }
}
/*========================================================================*/
/*====================  TABLET  =====================================*/
/*========================================================================*/
@media screen and (min-width: 700px) {
  .grid-container {
    flex-direction: row;

    justify-content: space-between;
    flex-flow: wrap;
  }
  .grid-container > .grid__cell.span-3,
  .grid-container > .grid__cell.span-4,
  .grid-container > .grid__cell.span-6,
  .grid-container > .grid__cell.t-span-6 {
    width: 48%;
  }
  @supports (display: grid) {
    .grid-container > .grid__cell.span-12 {
      width: 100%;

      grid-column-end: span 12;
    }
    .grid-container > .grid__cell.t-span-6,
    .grid-container > .grid__cell.span-6,
    .grid-container > .grid__cell.span-4,
    .grid-container > .grid__cell.span-3 {
      width: auto;

      grid-column-end: span 6;
    }
  }
}
/*========================================================================*/
/*====================  DESKTOP  =====================================*/
/*========================================================================*/
@media screen and (min-width: 940px) {
  .grid-container > .grid__cell.span-6 {
    width: 48%;
  }
  .grid-container > .grid__cell.span-4 {
    width: 32%;
  }
  .grid-container > .grid__cell.span-3 {
    width: 23%;
  }
  .grid-container > .grid__cell.span-12 {
    width: 100%;

    grid-column-end: span 12;
  }
  @supports (display: grid) {
    .grid-container > .grid__cell.span-6 {
      width: auto;

      grid-column-end: span 6;
    }
    .grid-container > .grid__cell.span-4 {
      width: auto;

      grid-column-end: span 4;
    }
    .grid-container > .grid__cell.span-3 {
      width: auto;

      grid-column-end: span 3;
    }
    .grid-container > .grid__cell.span-12 {
      grid-column-start: 1;
      grid-column-end: 13;
    }
  }
}