<form >
<table>
<tr>
<td align="right">用户名:</td><td><input type="text"placeholder="Username" autofocus required /></td>
</tr>
<tr>
<td align="right">密码:</td><td><input type="password" placeholder="Password" required /></td>
</tr>
</table>
</form>
</center>
<br/>
<tr>
<td><a href="">忘记密码?</a> <a href="">注册</a></td>
</tr>
<br/>
<tr>
<td colspan="2" align="center">
<input type="button" onclick=“window.location='index.html'” />
</td>
</tr>
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