flex grid mixin

gistfile1.txt

@mixin flex-grid($columns) {
  @include flexbox();
  @include flex-flow(row nowrap);
  @if ($columns = 2) {
    & > .flex-grid--element {
      @include flex(1 0 50%);
    }
  }
}

.flex-grid {
  @include flex-grid(2);
}