[求助] Form 与文本之间怎么老是有一行的间歇?

问题如题，问题效果如下图所示，望高手指点，TKS

以下是上面这张图的代码:
<table width="408" border="1" cellpadding="0" cellspacing="0" bgcolor="#999966">
<tr>
<td width="21" height="41">&nbsp;</td>
<td width="326">&nbsp;</td>
<td width="53">&nbsp;</td>
</tr>
<tr>
<td height="21">&nbsp;</td>
<td bgcolor="#0000FF">
<form name="form1" method="post" action="">
<div align="center">
<input type="text" name="textfield">
<input type="submit" name="Submit" value="提交">
</div>
</form>
这一行与提交按钮之间老是有很大的间歇</td>
<td>&nbsp;</td>
</tr>
<tr>
<td height="38">&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
</tr>
</table>