转自：https://www.cnblogs.com/zengkun983/p/9760868.html
<div id="a">
<div id="b"></div>
<div id="c"></div>
</div>
以下代码可将id="c"的div在父元素的底部显示：
div#a{
position: relative;
}
div#c{
position:absolute;
bottom:0
}
转自：https://www.cnblogs.com/zengkun983/p/9760868.html
<div id="a">
<div id="b"></div>
<div id="c"></div>
</div>
以下代码可将id="c"的div在父元素的底部显示：
div#a{
position: relative;
}
div#c{
position:absolute;
bottom:0
}
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