doc/themes/learn2/scss/nucleus/_flex.scss

// Page Container
.container {
	width: $large-desktop-container;
	margin: 0 auto;
	padding: 0;
	@include breakpoint(desktop-range) {
		width: $desktop-container;
	}
	@include breakpoint(tablet-range) {
		width: $tablet-container;
	}
	@include breakpoint(large-mobile-range) {
		width: $large-mobile-container;
	}
	@include breakpoint(small-mobile-range) {
		width: $mobile-container;
	}
}

// Grid Row and Column Setup
.grid {
	@include display(flex);
	@include flex-flow(row);
	list-style: none;
	margin: 0;
	padding: 0;
	@include breakpoint(mobile-only) {
		@include flex-flow(row wrap);
	}
}

.block {
	@include flex(1);
    min-width: 0;
    min-height: 0;
	@include breakpoint(mobile-only) {
		@include flex(0 100%);
	}
}

// Content Block Spacing
.content {
	margin: $content-margin;
	padding: $content-padding;
}

body [class*="size-"] {
	@include breakpoint(mobile-only) {
		@include flex(0 100%);
	}
}

// Custom Size Modifiers
.size-1-2 {
	@include flex(0 percentage(1/2));
}

.size-1-3 {
	@include flex(0 percentage(1/3));
}

.size-1-4 {
	@include flex(0 percentage(1/4));
}

.size-1-5 {
	@include flex(0 percentage(1/5));
}

.size-1-6 {
	@include flex(0 percentage(1/6));
}

.size-1-7 {
	@include flex(0 percentage(1/7));
}

.size-1-8 {
	@include flex(0 percentage(1/8));
}

.size-1-9 {
	@include flex(0 percentage(1/9));
}

.size-1-10 {
	@include flex(0 percentage(1/10));
}

.size-1-11 {
	@include flex(0 percentage(1/11));
}

.size-1-12 {
	@include flex(0 percentage(1/12));
}

@include breakpoint(tablet-range) {
	.size-tablet-1-2 {
		@include flex(0 percentage(1/2));
	}

	.size-tablet-1-3 {
		@include flex(0 percentage(1/3));
	}

	.size-tablet-1-4 {
		@include flex(0 percentage(1/4));
	}

	.size-tablet-1-5 {
		@include flex(0 percentage(1/5));
	}

	.size-tablet-1-6 {
		@include flex(0 percentage(1/6));
	}

	.size-tablet-1-7 {
		@include flex(0 percentage(1/7));
	}

	.size-tablet-1-8 {
		@include flex(0 percentage(1/8));
	}

	.size-tablet-1-9 {
		@include flex(0 percentage(1/9));
	}

	.size-tablet-1-10 {
		@include flex(0 percentage(1/10));
	}

	.size-tablet-1-11 {
		@include flex(0 percentage(1/11));
	}

	.size-tablet-1-12 {
		@include flex(0 percentage(1/12));
	}
}

// Fix for Firefox versions 27 and below
@include breakpoint(mobile-only) {
	@supports not (flex-wrap: wrap) {
		.grid {
			display: block;
			@include flex-wrap(inherit);
		}
		.block {
			display: block;
			@include flex(inherit);
		}
	}
}

// Reordering
.first-block {
  -webkit-box-ordinal-group: 0;
  -webkit-order: -1;
  -ms-flex-order: -1;
  order: -1;
}

.last-block {
  -webkit-box-ordinal-group: 2;
  -webkit-order: 1;
  -ms-flex-order: 1;
  order: 1;
}

// Fixed Grid Style
.fixed-blocks {
	@include flex-flow(row wrap);
	.block {
		@include flex(inherit);
		width: $fixed-block-full;
		@include breakpoint(desktop-range) {
			width: $fixed-block-desktop;
		}
		@include breakpoint(tablet-range) {
			width: $fixed-block-tablet;
		}
		@include breakpoint(mobile-only) {
			width: 100%;
		}
	}
}