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<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<h1 style="text-align: center;">JQuery Login Form </h1>

<div align="center">
<table>
    <tr>
      <td><input type="text" placeholder="Username :"><br /></tr>
    </tr>

    <tr>
      <td><input type="text" placeholder="Password :"></tr>
    </tr>

<tr>
      <td><input type="submit" value="Se connecter maintenant."></tr>
    </tr>
</table>
</div>