<table border="0" style="padding:10px;width: 960px;border-collapse: collapse;">
<tbody>
<tr>
<td style="padding: 0"><img src="8.jpg" alt="" /></td>
<td style="padding: 0"><img src="98.jpg" alt="" /></td>
<td style="padding: 0"><img src="998.jpg" alt="" /></td>
<td style="padding: 0"><img src="1998.jpg" alt="" /></td>
</tr>
<tr>
<td style="background-color: #757575;">11194</td>
<td style="background-color: #757575;">11194</td>
<td style="background-color: #757575;">11194</td>
<td style="background-color: #757575;">11194</td>
</tr>
<tr>
<td style="padding: 0"><img src="8.jpg" alt="" /></td>
<td style="padding: 0"><img src="98.jpg" alt="" /></td>
<td style="padding: 0"><img src="998.jpg" alt="" /></td>
<td style="padding: 0"><img src="1998.jpg" alt="" /></td>
</tr>
</tbody>
</table>
why i can't add margin padding to the tr and td? i want the td (<td style="background-color: #757575;">11194</td>
) have margin-right.namely, each separated by some space. but can't work. how to correct it. and the second tr have some space between the following tr.