Using the new source-set and sizes attributes, and the new picture element, it's possible to create images that behave better in a responsive design. These new pieces of markup allow us to deliver the right image to the right device based on resolution, pixel density, and other factors we
define. This will help web pages load faster and look better and the most capable devices will get the best looking images possible

What you'll learn
Image formats
srcset attribute
sizes attribute
element
Art direction