@for $i from 1 through 12 {
  .gtr-#{$i} {
    grid-template-rows: repeat(#{$i}, 1fr);
  }
}

@for $i from 1 through 12 {
  .gtc-#{$i} {
    grid-template-columns: repeat(#{$i}, 1fr);
  }
}

@for $i from 1 through 12 {
  @include gtr-breakpoints($i);
}

@for $i from 1 through 12 {
  @include gtc-breakpoints($i);
}