1 <?xml version="1.0"?>
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2 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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4 <title>Rectangles</title>
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5 <style type="text/css">
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13 background-color: blue;
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20 background-color: red;
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23 width: 48.666666667px;
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24 height: 49.333333333px;
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27 background-color: yellow;
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36 <div id="r1">r1</div>
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37 <div id="r2">r2</div>
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38 <div id="r3">r3</div>
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