1. Best viewed on laptop in Responsive Design Mode
   1. ⌃ ⌘ R on Mac/Safari
   2. ⌥ ⌘ R on Mac/Firefox
2. Remember to refresh page after changing from 1x to 2x etc in responsive design mode!
3. Image width attribute has been set to 320px with css

HTML

<img 
    id="elva" 

    srcset="../images/elva-fairy-marked-320w.jpg, 
            ../images/elva-fairy-marked-480w.jpg 1.5x,
            ../images/elva-fairy-marked-640w.jpg 2x" , 

    src="../images/elva-fairy-640w.jpg"

    alt="Picture of Elva dressed as a fairy">

CSS

img#elva {
    width: 320px;
}