easy_media_queries.scss

$l-device: 1200px;
$m-device: 760px;
$s-device: 480px;

@mixin d($size) {
	@if $size == l {
		@media screen and (min-width: #{$l-device}) {
			@content;
		}
	}
	@else if $size == m {
		@media screen and (min-width: #{$m-device}) and (max-width: #{$l-device} - 1) {
			@content;
		}
	}
	@else if $size == s {
		@media screen and (max-width: #{$m-device} - 1) {
			@content;
		}
	}
}