不显示表格外边框的css
<style>
table {border:none;padding:0px;border-collapse:collapse;}
td {border-bottom:1px solid #630;border-right:1px solid #630;}
td.b {border-bottom:none;}
td.r {border-right:none;}
</style>
<table>
<tr>
<td>   </td>
<td>   </td>
<td class= "r ">   </td>
</tr>
<tr>
<td>   </td>
<td>   </td>
<td class= "r ">   </td>
</tr>
<tr>
<td class= "b ">   </td>
<td class= "b ">   </td>
<td class= "b r ">   </td>
</tr>
</table>