How to support elements created by Angular (or other similar JS Frameworks) in IE11 or Safari browsers from before March 2016
Sometimes a project requires a very pretty content page filled with overlapping background images and floating text blocks that is not particularly easy to implement responsively using HTML. The relatively new
Luckily there a great polyfill, picturefill so there is no need for weird hacks.
Including both picturefill.min.js plugins/mutation/pf.mutation.min.js on the page will allow last year’s browser to display your lovely mobile images.

References
1 https://developer.mozilla.org/en-US/docs/Web/HTML/Element/picture#Browser_compatibility
2 https://responsiveimages.org/
3 http://caniuse.com/#feat=picture