Use of h1,h2,h3,h4,h5,h6 tags in HTML

<!DOCTYPE html>
<head> <title> basic html programs </title></head>
<body>
<h1> Easy fundamentals </h1>
<h2> Easy fundamentals </h2>
<h3> Easy fundamentals </h3>
<h4> Easy fundamentals </h4>
<h5>Easy fundamentals</h5>
<h6>Easy fundamentals</h6>
</body>
</html>

output: 


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