去掉table中的空隙

将cellspacing与cellpadding设置为0即可

<style>
td{
 border:1px;
}
</style>

<table cellspacing="0" cellpadding="0" border="1px">
<tr>
<td>11111111</td>
<td>22222222</td>
</tr>
<tr>
<td>33333333</td>
<td>44444444</td>
</tr>
</table>