css border, padding, margin problems

Kode 

<table class='fieldarea2' >
<tr class='tr-test' >
<td class='td-test'>
<input class='textbox_border2' type='editbox' />
</td>
</tr>
</table>

Kode 

.fieldarea2
{
	width:50%;
	padding:0;
	margin:0;
	border:0;
	border-collapse:collapse;
	background-color:silver;	
}

.tr-test
{
	padding:0;
	margin:0;
	border:0;
	background-color:yellow;
}

.td-test
{
	padding:0;
	margin:0;
	border:0;
	font-weight: normal; 
	background-color:green;
}

.textbox_border2
{
	font-family:Verdana,Tahoma,Arial,Sans-Serif;
	font-size:100%;
	width:100%;
	height:100%;
	padding:0;
	margin:0;
	border:0;
	border-color:red;
	background-color:Aqua;
}