Check out example codes for "html header". It will help you in understanding the concepts better.

Code Example 1

<html> 
  <head>
  </head>
  <body>
    <h1>Hello World</h1>
  </body>
</html>

Code Example 2

<!-- Html Header-->
<h1>text</h1>
<h2>text</h2>
<h3>text</h3>
<h4>text</h4>
<h5>text</h5>
<h6>text</h6>
<!--The most The Number Became Big the Most The The Letter Your Print Out Became Small-->

Code Example 3

<header>
  <h1>Example Title</h1>
  <p>Example Subtitle</p>
</header>

Code Example 4

<h1> Example Test </h1>

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