任性的firefox瀏覽器

.one{
 position:relative;
}

.two{
 position:relative;
 top:0;
 left:100px;
}

<table>
<tr>
<td class="one">
<p class="two"></p>
</td>
</tr>
</table>

在firefox下會抓不到.one的position 造成跑版，只好改成在用div包起來

.one{
 position:relative;
}

.two{
 position:relative;
 top:0;
 left:100px;
}

<table>
<tr>
<td>
<div class="one">
<p class="two"></p>
</div>
</td>
</tr>
</table>