HTML Heading

<DOCTYPE html>
 <html>
     <head> 
         <title> heading tag </title>
     </head>
     <body>
         <h1> This is h1 heading tag </h1>
         <h2> This is h2 heading tag </h2>
         <h3> This is h3 heading tag </h3>
         <h4> This is h4 heading tag </h4>
         <h5> This is h5 heading tag </h5>
         <h6> This is h6 heading tag </h6>
     </body>
 </html>