Bootrsap 3 gridly

gridly.less

.make-columns(@name; @columns; @gutter-width: @grid-gutter-width) {
    @class-lg: ~".col-lg-@{name}";
    > @{class-lg} {
        .make-lg-column((@grid-columns / @columns); @gutter-width);
    }
    @class-md: ~".col-md-@{name}";
    > @{class-md} {
        .make-md-column((@grid-columns / @columns); @gutter-width);
    }
    @class-sm: ~".col-sm-@{name}";
    > @{class-sm} {
        .make-sm-column((@grid-columns / @columns); @gutter-width);
    }
    @class-xs: ~".col-xs-@{name}";
    > @{class-xs} {
        .make-xs-column((@grid-columns / @columns); @gutter-width);
    }
}

.row {
    .make-columns("tenth", 10);
    .make-columns("fifth", 5);
    .make-columns("quarter", 4);
    .make-columns("third", 3);
    .make-columns("half", 2);
}