<!DOCTYPE html>
<html lang="en-US">
<body>
<picture>
<source media="(min-width: 660px)" srcset="devices.jpg">
<source media="(min-width: 475px)" srcset="macbook.jpg">
<source media="(min-width: 385px)" srcset="ipad.jpg">
<img src="iphone.jpg" alt="apple iphone" style="width:auto;">
</picture>
<p><strong>Note</strong> : Resize the output window.</p> </body>
</html>