Code posts
Foundations: headings
Well structured content helps everybody understand and navigate documents. When coded properly in the HTML, headings, lists, and landmarks help people who use screen readers (software that reads what’s on screen) both scan and navigate pages.
Foundations: text descriptions
Text descriptions are primary content, and when images do not have a text description, anyone who cannot see the image will not know its purpose. This means people may be unable to access content or perform related tasks.