<img srcset="https://s3-us-west-1.amazonaws.com/piio-test/blog/bird-square-1024w.jpg 1024w,
             https://s3-us-west-1.amazonaws.com/piio-test/blog/bird-square-2048w.jpg 2048w"
     sizes="(max-width: 1024px) 1024px,
            2048px"
  src="https://s3-us-west-1.amazonaws.com/piio-test/blog/bird-square-2048w.jpg" id="bird" />
img { width: 100%}

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