Adaptive mixin (sass)

mixin.sass

@mixin adaptive($media)
	@if $media == mobile
		@media only screen and (max-width: $mobile)
			@content
	@else if $media == pad
		@media only screen and (min-width: $mobile + 1) and (max-width: $desktop - 1)
			@content
	@else if $media == desktop
		@media only screen and (min-width: $desktop )
			@content

Использую в sass

.body { @include adaptive(desktop) { // тут пишу стили для разрешения $desktop } }