Media Queries in Sass

_media-queries.scss

// Media Queries in Sass 3.2
//
// These mixins make media queries a breeze with Sass.
// The media queries from mobile up until desktop all 
// trigger at different points along the way
//
// And important point to remember is that and width
// over the portrait width is considered to be part of the
// landscape width. This allows us to capture widths of devices
// that might not fit the dimensions exactly. This means the break
// points are seamless.

$mq-mobile-portrait		: 320px !default;
$mq-mobile-landscape	: 480px !default;
$mq-tablet-portrait		: 768px !default;
$mq-tablet-landscape	: 1024px !default;
$mq-desktop				: 1382px !default;

// Both portrait and landscape
@mixin mobile-only {
	@media (max-width : $mq-mobile-landscape) {
		@content;
	}
}

// Everything up to and including the portrait width of the phone
// Since it's the smallest query it doesn't need a min
@mixin mobile-portrait-only {
	@media (max-width : $mq-mobile-portrait) {
		@content;
	}
}

// Everything up to and including the mobile portrait
@mixin mobile-portrait-and-below {
	@media (max-width : $mq-mobile-portrait) {
		@content;
	}
}

// Everything above and including the mobile portrait
@mixin mobile-portrait-and-up {
	@media (min-width : $mq-mobile-portrait) {
		@content;
	}
}

// Everthing larger than a portrait mobile up until mobile landscape
@mixin mobile-landscape-only {
	@media only screen and (min-width : $mq-mobile-portrait + 1) and (max-width : $mq-mobile-landscape) {
		@content;
	}
}

// Everything up to and including the mobile landscape width
@mixin mobile-landscape-and-below {
	@media only screen and (max-width : $mq-mobile-landscape) {
		@content;
	}
}

// Everything above and including the mobile landscape width
@mixin mobile-landscape-and-up {
	@media only screen and (min-width : $mq-mobile-portrait + 1) {
		@content;
	}
}

// Both the portrait and landscape width of the tablet
// Larger than a landscape mobile but less than or equal to a landscape tablet
@mixin tablet-only {
	@media only screen and (min-width : $mq-mobile-landscape + 1) and (max-width : $mq-tablet-landscape) {
		@content;
	}
}

// Everything larger than mobile landscape up until the portrait width of the tablet
@mixin tablet-portrait-only {
	@media only screen and (min-width : $mq-mobile-landscape + 1) and (max-width : $mq-tablet-portrait) {
		@content;
	}
}

// Everything below and including the portrait width of the tablet
@mixin tablet-portrait-and-below {
	@media only screen and (max-width : $mq-tablet-portrait) {
		@content;
	}
}

// Everything above and including the portrait width of the tablet
@mixin tablet-portrait-and-up {
	@media only screen and (min-width : $mq-mobile-landscape + 1) {
		@content;
	}
}

// Larger than portrait but less than or equal to the landscape width
@mixin tablet-landscape-only {
	@media only screen and (min-width : $mq-tablet-portrait + 1) and (max-width : $mq-tablet-landscape) {
		@content;
	}
}

// Up to and including the tablet landscape
@mixin tablet-landscape-and-below {
	@media only screen and (max-width : $mq-tablet-landscape) {
		@content;
	}
}

// Everything larger than portrait tablet
@mixin tablet-landscape-and-up {
	@media only screen and (min-width : $mq-tablet-portrait + 1) {
		@content;
	}
}

// Everything larger than a landscape tablet
@mixin desktop-and-up {
	@media only screen and (min-width : $mq-tablet-landscape + 1) {
		@content;
	}
}

// Everything below and including the desktop 
@mixin desktop-and-below {
	@media only screen and (max-width : $mq-desktop) {
		@content;
	}
}

// Everything larger than a landscape tablet but less than or equal to the desktop
@mixin desktop-only {
	@media only screen and (min-width : $mq-tablet-landscape + 1) and (max-width : $mq-desktop) {
		@content;
	}
}

// Retina screens have a 1.5 pixel ratio, not 2
@mixin retina {
	@media only screen and (-webkit-min-device-pixel-ratio : 1.5), only screen and (min-device-pixel-ratio : 1.5) {
		@content;
	}
}

@anthonyshort what is this licensed under?