//** Number of columns in the grid.
$grid-columns:  12 !default;
//** Padding between columns. Gets divided in half for the left and right.
$gutter:        15px !default;
$screen-md-min: 991px;

@mixin colunas($total-columns) {
	position: relative;
	min-height: 1px;
	padding-left: ($gutter / 2);
	padding-right: ($gutter / 2);

	$columns : ($grid-columns/ $total-columns);

	@media (min-width: $screen-md-min) {
		float: left;
		width: percentage(($columns / $grid-columns));
	}
}