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<html>3
<head>4
<meta charset="utf-8">5
<style>6
p.normal {7
font-weight: normal;8
}9
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p.light {11
font-weight: lighter;12
}13
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p.thick {15
font-weight: bold;16
}17
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p.thicker {19
font-weight: 900;20
}21
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</head>23
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<body>25
<p class="normal">This is a paragraph.</p>26
<p class="light">This is a paragraph.</p>27
<p class="thick">This is a paragraph.</p>28
<p class="thicker">This is a paragraph.</p>29
</body>30
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</html>