sass-site/source/assets/sass/layout/_grid-system.scss

.sl-l-grid {
  &,
  &--flex-columns > .sl-l-grid__column {
    display: flex;
  }

  flex-wrap: wrap;
  margin: 0;
  padding: 0;
  list-style: none;

  &__column {
    flex: 1;
  }
}

@each $breakpoint, $size in $sl-breakpoints {
  $prefix: if(($breakpoint == 'none'), '', '#{$breakpoint}-');

  @include sl-breakpoint-set($breakpoint, $size) {
    .sl-l-#{$prefix}grid {
      &--top {
        align-items: flex-start;
      }

      &--center {
        align-items: center;
      }

      &--bottom {
        align-items: flex-end;
      }

      &--stretch {
        align-items: stretch;
      }

      &--baseline {
        align-items: baseline;
      }

      &--justify {
        &-left {
          justify-content: flex-start;
        }

        &-center {
          justify-content: center;
        }

        &-right {
          justify-content: flex-end;
        }

        &-space {
          &-between {
            justify-content: space-between;
          }

          &-around {
            justify-content: space-around;
          }

          &-evenly {
            justify-content: space-evenly;
          }
        }
      }

      &--fit > .sl-l-grid__column {
        flex: 1;
      }

      &--full > .sl-l-grid__column {
        flex: 0 0 100%;
      }

      @for $i from 2 through 12 {
        &--divide-by-#{$i} > .sl-l-grid__column {
          flex: 0 0 (100 / $i) * 1%;
        }
      }

      &__column {
        &--top {
          align-self: flex-start !important;
        }

        &--center {
          align-self: center !important;
        }

        &--bottom {
          align-self: flex-end !important;
        }

        &--baseline {
          align-self: baseline !important;
        }

        &--stretch {
          align-self: stretch !important;
        }

        &--auto-size {
          flex: none !important;
        }

        @for $i from 1 through 11 {
          &--#{$i}-of-12 {
            width: (100% / 12) * $i !important;
          }
        }

        &--full {
          width: 100% !important;
        }
      }

      &--gutters {
        margin: {
          right: -(sl-px-to-rem(16px));
          left: -(sl-px-to-rem(16px));
        }

        > .sl-l-grid__column {
          padding: {
            right: sl-px-to-rem(16px);
            left: sl-px-to-rem(16px);
          }
        }

        &-large {
          margin: {
            right: -(sl-px-to-rem(32px));
            left: -(sl-px-to-rem(32px));
          }

          > .sl-l-grid__column {
            padding: {
              right: sl-px-to-rem(32px);
              left: sl-px-to-rem(32px);
            }
          }
        }

        &-small {
          margin: {
            right: -(sl-px-to-rem(8px));
            left: -(sl-px-to-rem(8px));
          }

          > .sl-l-grid__column {
            padding: {
              right: sl-px-to-rem(8px);
              left: sl-px-to-rem(8px);
            }
          }
        }
      }
    }
  }
}