The simplest way I’ve found (so far) to distill/explain srcset and sizes: https://t.co/I6YW0AqKfM

The focus of web accessibility is often on web development – the things that happen in HTML, CSS, or JavaScript after a site has been designed visually. Optimal accessibility should start much earlier, as part of the visual design process. We have created an infographic that highlights a few important principles of accessible design.