@mixin mm_columns_size($nr) {
    [class*='mm-menu_columns-'] .mm-panels > .mm-panel_columns-#{$nr} {
        transform: translate3d($nr * 100%, 0, 0);
    }

    .mm-menu_columns-#{$nr} .mm-panels > .mm-panel {
        z-index: $nr;

        @if ($nr > 0) {
            width: ceil(100% / $nr * 100) / 100;
        }
        else {
            width: 100%;
        }

        &:not(.mm-panel_opened):not(.mm-panel_opened-parent) {
            transform: translate3d(($nr + 1) * 100%, 0, 0);
        }
    }

    @include mm_offcanvas_size(
        '.mm-menu_columns-#{$nr}',
        $mm_menuWidth,
        $mm_menuMinWidth,
        $mm_menuMaxWidth * $nr
    );
    @include mm_position_right(
        '.mm-menu_columns-#{$nr}',
        $mm_menuWidth,
        $mm_menuMinWidth,
        $mm_menuMaxWidth * $nr
    );
}