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Why doesn’t the height of a container element increase if it contains floated elements?7个
inner1和inner2 div在外部div中,外部高度仍然为0px,height为auto
inner1和inner2 div在外部div中,外部高度仍然为0px,height为auto
如何获得外部div的子元素的高度？
码
<style>
#outer {
width:300px;
height:auto;;
background:#ccc;
}
#inner1 {
float:left;
width:100px;
height:100px;
background:#f00;
}
#inner2 {
float:left;
width:100px;
height:100px;
background:#0f0;
}
</style>
<div id="outer">
<div id="inner1"></div>
<div id="inner2"></div>
</div>
