HTML Heading and Landmark Elements

Heading Elements

Element	Description
h1	Title of web page at the beginning of the main content.
h2	Identify subsections of main region. Identify title for complementary region. Labels for top-level navigation and complementary landmark regions.
h3-h6	Identify subsections of top level regions using the heading level to identify nesting level of the section.

Landmark Elements

Role	Element	Description
banner	header	Shared content at the beginning of most pages within a website.
complementary	aside	Content that is related to the main content of a website, that is often located in a sidebar.
contentinfo	footer	Shared content at the bottom of most web pages within a website.
main	main	Identifies the main content of a web page.
navigation	nav	Identifies links related to website navigation.
region	section with accessible name	Typically identifies subsections of other landmark regions.
search	[role=search]	Identifies search forms on a web page.