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<html lang="en">
<head>
<title></title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
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</head>
<body>
<div class="container">
<h1>Viết tắt</h1>
<p>Phần tử abbr dùng để đánh dấu từ viết tắt</p>
<p>Từ viết tắt <abbr title="World Health Organization">WHO</abbr> có nghĩa là Tổ chức Y tế Thế giới.</p>
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</body>
</html>
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