respond-to mixin

respond-to.sass

$mediaPhone:              480px !default
$mediaTablet:             768px !default
$mediaDesktop:            980px !default
$mediaLarge:              1200px !default

=respond-to($media)
  @if $media == phone
    @media only screen and (max-width: $mediaPhone)
      @content
  @else if $media == tablet
    @media only screen and (max-width: $mediaTablet - 1)
      @content
  @else if $media == portrait
    @media only screen and (min-width: $mediaTablet) and (max-width: $mediaDesktop - 1)
      @content
  @else if $media == desktop
    @media only screen and (min-width: $mediaDesktop)
      @content
  @else if $media == large
    @media only screen and (min-width: $mediaLarge)
      @content

Nice!