margin垂直折叠3

by cyning sun April 20, 2014

HTML

<!-- 毗邻不折叠的情况: 块级格式化上下文-->
<div style="margin-top:50px; width:100px; height:100px; background-color:green; overflow:hidden;">
    <div style="margin-top:50px; background-color:gold;">B</div>
</div>

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margin垂直折叠3

HTML

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