WordPress Gallery Columns - SASS / Bourbon Neat

style.scss

.gallery-columns-2 {
    @include row();
    .gallery-item {
        margin:0;
        @include span-columns(6 of 12);
        @include omega(2n);
        text-align: center;
    }
}

.gallery-columns-3 {
    @include row();
    .gallery-item {
        margin:0;
        @include span-columns(4 of 12);
        @include omega(3n);
        text-align: center;
    }
}

.gallery-columns-4 {
    @include row();
    .gallery-item {
        margin:0;
        @include span-columns(3 of 12);
        @include omega(4n);
    }
}

.gallery-columns-5 {
    @include row();
    .gallery-item {
        margin:0;
        @include span-columns(2.4 of 12);
        @include omega(5n);
    }
}