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                <!-- pri4 example using picturefill -->
<div id="image">
 <img sizes="(min-width: 640px) 50vw, 100vw"
        srcset=" 200w,
        src="" alt="text" />
<div id="text">
  <p>Within the fluid context of responsive websites, the restrictive nature of the < img > element, and lack of CSS controls for foreground images, has not been the elephant in the room. It's just been the elephant that we couldn't agree what to do with…</p>



                @media (min-width: 640px) {
  #image {
    float: left;
    width: 50%;
  #text {
    float: right;
    width: 50%;

body {
  margin-left: 0;

img {
  width: 100%;


                		// Picture element HTML5 shiv
		document.createElement( "picture" );