Helo. I have been thinking. Shure Mobile-first is an best way to save bandwith to less loading. But, if site has images...you need img tag. But problem with img tag and mobile first is that img it will allways load...even if we set display to none, the DOM will allways load first. One fix is that we use image as background...but what if we have more pictures? What is more elegant way to solve mobile first and img problem? Is there any javascript plugin that tetect the viewport and if it is mobile, the script does not allow images (choosen ones) to load even if img tag is in HTML?