$base : 20;
$large : ( $base * 4 );
$medium : ( $base * 3 );
$small : ( $base * 2 );

.row-spacing-lg {
	padding-top: #{$large}px;
	padding-bottom: #{$large}px;
}

.row-spacing-lg-top {
	padding-top: #{$large}px;
}

.row-spacing-lg-bottom {
	padding-bottom: #{$large}px;
}

.row-spacing-md {
	padding-top: #{$medium}px;
	padding-bottom: #{$medium}px;
}

.row-spacing-md-top {
	padding-top: #{$medium}px;
}

.row-spacing-md-bottom {
	padding-bottom: #{$medium}px;
}

.row-spacing-sm {
	padding-top: #{$small}px;
	padding-bottom: #{$small}px;
}

.row-spacing-sm-top {
	padding-top: #{$small}px;
}

.row-spacing-sm-bottom {
	padding-bottom: #{$small}px;
}