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              <script src="https://afarkas.github.io/respimage/respimage.js" async=""></script>
<p>variable responsive image with srcset and sizes.</p>
	srcset="http://placehold.it/250x107 250w,
    	http://placehold.it/466x200 466w,
		http://placehold.it/700x300 700w,
		http://placehold.it/1050x450 1050w,
		http://placehold.it/1400x600 1400w"
	sizes="(max-width: 1000px) calc(100vw - 20px), 1000px"
	alt="flexible image" />

<p><a href="https://github.com/aFarkas/respimage" target="_blank">respimage polyfill</a></p>
              body {
  max-width: 1000px;
  margin: auto;

img {
  width: 100%;
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