feature:
The <picture> element allows a designer to explicitly specify the right image to use for different scenarios, similar to using media queries but for image tag sources. The element itself is merely a container; any number of <source> tags inside of <picture> is where all the magic happens. Finally, a required <img> element declares the default image to use if no other conditions are met. Browsers that do not support <picture> will gracefully fallback to this <img> tag, making this safe to use.
All major evergreen browsers support. <picture>. Safari supports it as of version 9.1. For Internet Explorer and older browsers, a polyfill is available, but it is not required.