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 <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 <head> tag. Still, the HTML Document is valid and will work correctly like any other valid HTML Document
<!DOCTYPE html> <html> <title>Title of the document</title> <body> <h1>This is heading 1</h1> <p>This is demo text.</p> </body> </html>