Headers help users understand what the content of the page is about. They appear at the top of a page, above the main body text. They are usually styled as level (H1) headings.
How the headers are viewed with various colour blindnesses
How the headers are viewed with total colour blindness.
How keyboard navigation works with headers.
Australian Government Crest
Site title, Service description that could be longer
How the header demo is described by assistive technology.
As read with macOS High Sierra VoiceOver.