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<html>
<head>
  <meta charset="utf-8">
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  <title>ma page</title>
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header {
  font-style:italic;
  font-size:1.5em;
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}
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<body>
  <header>mon portoflio </br>
  ceci sont ces mes experiences</br>
  et mon parcourt professionnel</header>
  <aside></aside>


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  font-style:italic;
  font-size:1.5em;
  line-height:1.5em
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