比如，style如下

#branding {

width:700px;

height:100px;

position:relative;//此处如果没有relative，下面的电话号就是相对于页面，否则就
是相对于包含的div。这块为什么和relative有关系呢？

background-color:#00ff00

}

#branding .tel{

position:absolute;

right:10px;

bottom:10px;

text-align:right

}

html如下

<div id = "branding">

hello  relative

<p class="tel">Tel 010-88509834</p>

hello relative

</div>


【 在 sayinger (言者) 的大作中提到: 】
: offsetParent
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谢楼上二位了。

【 在 shaolin (叶孤城|漫漫当爹路) 的大作中提到: 】
: The following example shows an absolutely positioned box that is a child of a relatively positioned box. Although the parent outer box is not actually offset, setting its 'position' property to 'relative' means that its box may serve as the containin
: 见w3，有很详细的说明。
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