Please someone convert this XML code to DTD. I tried but i could not understand. Please help me with this.
<html xmlns="http://www.w3.org/1999/xhtml">

<head>
<title>AIUB</title>
<link rel="stylesheet" href="css/style.css" type="text/css" />
</head>

<body>
<img src="images/banner.png" alt="" />

<br/>

<form method="post" autocomplete="off" action="verify.php">
<table id="loginTable" border="0">
<tr style="">
<td>&nbsp;</td>
<td>
<img src="images/logo.png"/>
</td>
</tr>
<tr>
<td>USERNAME</td>
<td>
<input type="text" name="username" />
</td>
</tr>
<tr>
<td>PASSWORD</td>
<td>
<input type="password" name="password" />
</td>
</tr>
<tr style="">
<td>&nbsp;</td>
<td>
<input type="submit" name="submit" />
</td>
</tr>
</table>
</form>
</body>
</html>