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<style type="text/css">
div { border:1px solid #000; width:300px; height:300px; text-align:center; position:relative; display:table-cell; vertical-align:middle; }
p { +position:absolute; top:50%; }
img { +position:relative; top:-50%; left:-50%; }
</style>
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</div>
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</html>
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