bootstrap-less-port/less/mixins/_grid.less

A Less port of Bootstrap v4

/// Grid system
//
// Generate semantic grid columns with these mixins.

#make-container(@gutter: @grid-gutter-width) {
	width: 100%;
	padding-right: (@gutter / 2);
	padding-left: (@gutter / 2);
	margin-right: auto;
	margin-left: auto;
}


// For each breakpoint, define the maximum width of the container in a media query
//@mixin make-container-max-widths($max-widths: $container-max-widths, $breakpoints: $grid-breakpoints) {
//  @each $breakpoint, $container-max-width in $max-widths {
//    @include media-breakpoint-up($breakpoint, $breakpoints) {
//      max-width: $container-max-width;
//    }
//  }
//}
#make-container-max-widths(@max-widths: @container-max-widths, @breakpoints: @grid-breakpoints) {
	each(@max-widths, #(@container-max-width, @breakpoint) {
		#media-breakpoint-up(@breakpoint, {
			max-width: @container-max-width;
		}, @breakpoints);
	});
}

#make-row(@gutter: @grid-gutter-width) {
	display: flex;
	flex-wrap: wrap;
	margin-right: -(@gutter / 2);
	margin-left: -(@gutter / 2);
}

#make-col-ready(@gutter: @grid-gutter-width) {
	position: relative;
	// Prevent columns from becoming too narrow when at smaller grid tiers by
	// always setting `width: 100%;`. This works because we use `flex` values
	// later on to override this initial width.
	width: 100%;
	min-height: 1px; // Prevent collapsing
	padding-right: (@gutter / 2);
	padding-left: (@gutter / 2);
}

#make-col(@size, @columns: @grid-columns) {
	flex: 0 0 percentage((@size / @columns));
	// Add a `max-width` to ensure content within each column does not blow out
	// the width of the column. Applies to IE10+ and Firefox. Chrome and Safari
	// do not appear to require this.
	max-width: percentage((@size / @columns));
}

#make-col-auto() {
	flex: 0 0 auto;
	width: auto;
	max-width: 100%; // Reset earlier grid tiers
}

#make-col-offset(@size, @columns: @grid-columns) {
	@num: (@size / @columns);

	& when (@num = 0) {
		margin-left: 0;
	}
	& when not (@num = 0) {
		margin-left: percentage(@num);
	}
}

// Row columns
//
// Specify on a parent element(e.g., .row) to force immediate children into NN
// numberof columns. Supports wrapping to new lines, but does not do a Masonry
// style grid.
#row-cols(@count) {
	& > * {
		flex: 0 0 (100% / @count);
		max-width: (100% / @count);
	}
}