<!DOCTYPE html> <html> <head> <title>HTML Heading</title> </head> <body> <h1>This is Heading 1</h1> <h2> This is Heading 2</h2> <h3> This is Heading 3</h3> <h4> This is Heading 4</h4> <h5> This is Heading 5</h5> <h6>This is Heading 6</h6> </body> </html>