<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
</head>
<body>
<main>
<h1>Programming languages</h1>
<p>
Languages HTML and CSS are intended for site layout.
</p>
<article>
<h2>HTML</h2>
<p>
HTML (Hyper Text Markup Language) is a language of hypertext markup, which is used to create web pages.
</p>
<p>... </p>
<p>... </p>
</article>
<article>
<h2>CSS</h2>
<p>
CSS is a language of styles, defining the display of HTML documents.
</p>
<p>... </p>
</article>
</main>
</body>
</html>