With HTML, the essentials are doctype declaration, <html><head> and </body>. But, you will be amazed to know that a valid HTML document can work without the <html><body> and <head> element. The doctype declaration<!DOCTYPE html> will come always since it tells and instructs the browser about what the page is about.
Let’s see an example; here we won’t use the html><body> and <head> element. Still, the HTML Document is valid and will work correctly like any other valid HTML Document −
<!DOCTYPE html> <title>Title of the page</title> <h1>This is heading 1</h1> <h2>This is heading 2 </h2> <p>This is a paragraph.</p>