HTML 5 TutorialsHtml5 What is
The <hgroup> tag was introduced in HTML 5.The <hgroup> tag indicate the heading of a document or part of web page.which is used to group headers like this h1 to h6 tags.h1 is a largest is the main heading of the section others h2 to h6 is are sub-headings of the section. The <hgroup> tag did not exist in older versions of HTML.
In the above first output Heading 1 is a largest heading. Heading 2 and Heading 3 is a sub heading.