@import nib

$container
	clearfix()
	width: 960px
	margin: 0 auto

$row
	margin-bottom: 10px

$grid
	float: left
	margin-right: 10px
	&:last-child
		margin-right: 0


.container
	@extend $container

.two-col 
	@extend $row
	.col-aside-left
		@extend $grid
		width: 240px
	.col-main
		@extend $grid
		width: 710px
	.col-aside-right
		@extend $grid
		width: 240px
	.last
		margin-right: 0

.three-col
	@extend $row
	.col-aside-left
		@extend $grid
		width: 150px
	.col-main
		@extend $grid
		width: 610px
	.col-aside-right
		@extend $grid
		width: 180px
	.last
		margin-right: 0