H tags should be used reasonably in web page production

H tags should be used reasonably in web page production
HTML tags have special tags to handle the title of the page. They are h1, h2, h3, h4, h5 and h6. Just like in feudal society, h1 is the omnipotent monarch and h6 is the lowest class of people.

Copy code
The code is as follows:

<h1>Main title, write here</h1>
<h6>Sub-title, write here</h6>


Copy code
The code is as follows:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<title>My first web page - jb51.net</title>
</head>
<body>
<h1>My first web page - jb51.net</h1>
<h2>What is this</h2>
<p>Simple web pages composed with HTML</p>
<h2>Purpose</h2>
<p>Learn HTML</p>
</body>
</html>

Note that the h1 tag can only be used once on a page - assuming it is the main title of the page, it should not be used multiple times (equivalent to the title of an article, you can have a sub-title, but you would not use two parallel titles, right? - Translator's note jb51.net).
However, h2 to h6 can be used as many times as you need, but they should be used in the order they are designed to be used. For example, h4 should be a subheading of h3, h3 should be a subheading of h2, and so on.

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