tinygrid.less

/*---------------------------------------------------------------------
 * Usage:
 * - don't change the left/right padding of `.r` or a `.c-*` elements
 *-------------------------------------------------------------------*/

@number-of-columns: 12;
@column-percentage: 100% / @number-of-columns;
@min-column-size: 80px;
@max-column-size: 100px;
@gutter-size: 10px;
// 20px gutter between each AND at ends
@large-width: ((@number-of-columns * @min-column-size) + (@gutter-size * (@number-of-columns + 1)));
@grid-width: ((@number-of-columns * @max-column-size) + (@gutter-size * (@number-of-columns + 1)));
@column-width: @grid-width / @number-of-columns;
// resets
*,
*:after,
*:before {
    margin: 0;
    padding: 0;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}

.r {
    margin-left: auto;
    margin-right: auto;
    position: relative;
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
    width: 100%;

    @media only screen and (min-width: @large-width) {
        flex-direction: row;
    }
}


.create-push(@cn, @n) when (@n > 0) {
    .c-@{cn}.push-@{n} {
        margin: 0;

        @media only screen and (min-width: @large-width) {
            margin-left: @n * @column-percentage;
            margin-right: 0;  // made up for by padding later
            max-width: @cn * @column-percentage;
        }
    }
    .create-push(@cn, @n - 1);
}

.create-pull(@cn, @n) when (@n > 0) {
    .c-@{cn}.pull-@{n} {
        margin-right: 0;
        @media only screen and (min-width: @large-width) {
            margin-right: (@n * @grid-width / @number-of-columns);
        }
    }
    .create-pull(@cn, @n - 1);
}

.create-grid(@n) when (@n =1) {
    @media only screen and (min-width: @large-width) {
        padding-left: 20px;
    }
}

.create-grid(@n) when (@n > 0) {
    .c-@{n} {
        width: 100%;
        padding: 0 @gutter-size / 2;

        .outer & {
            margin: 0;
        }

        @media only screen and (min-width: @large-width) {
            max-width: (@n * @column-percentage);
            flex: 1 1 auto;
        }
    }

    .create-push(@n, @number-of-columns);
    .create-pull(@n, @number-of-columns);

    .create-grid(@n - 1);
}

.create-grid(@number-of-columns);