title: ios7 media queries (retina background-size)
body: <p>Apple new iOS7 operating system it's causing issues with retina media queries. </p>
  
  <p>The image replacement works perfectly on iPhones 4, 4s, 5 running iOS6 and below (any browser). iOS7 browsers appear to grab the high-res image but ignore the background-size property.</p>
  
  <p>I try with "(min-device-pixel-ratio: 2)" but don´t works because the app showed our non retina sprite ¿anyone have an idea to fix it?</p>
  
  <pre><code>@mixin sprite($x,$y, $spriteX: 32, $spriteY: 32, $imagePath: "sprites.png"){
    @include spriteHelper($imagePath, $x, $y, $spriteX, $spriteY);
    @media (-webkit-min-device-pixel-ratio: 2) and (min-device-pixel-ratio: 2)
    {
        $imagePath: "spritesx2.png";
        background-size: 500px 1760px;
        @include spriteHelper($imagePath, $x, $y, $spriteX, $spriteY);
    }
  }
  </code></pre>