gistfile1.txt

<div data-ofs-component="responsive">
    <div class="full" data-media="(min-width: 769px)">
        <span data-ofs-component="picture" class="image image-panorama_a">
            <!-- normal picturefill markup -->
        </span>
    </div>
    <div class="tablet" data-media="(min-width: 481px) and (max-width : 768px)">
        <span data-ofs-component="picture" class="image image-tablet_a">
            <!-- normal picturefill markup -->
        </span>
    </div>
    <div class="mobile" data-media="(max-width: 480px)">
        <span data-ofs-component="picture" class="image image-mobile_a">
            <!-- normal picturefill markup -->        
        </span>
    </div>
</div>