Tomeij's Sass media query mixin

gistfile1.txt

$devices: tablet 768px, phone 320px;

@mixin respond-to($respond-to) {
  @each $device in $devices {
    @if nth($device, 1) == $respond-to {
      @media (max-width: nth($device, 2)) {
        @content;
      }
    }
  }
}