我有这些嵌套的div,我需要主容器扩展(高度)以容纳内部的DIV
<!-- head -->
...
<!-- /head -->
<body class="main">
<div id="container">
<div id="header">
<!--series of divs in here, graphic banner etc. -->
</div>
<div id="main_content"> <!-- this DIV _should_ stretch to accomodate inner divs -->
<div id="items_list" class="items_list ui-sortable">
<div id="item_35" class="item_details">
</div>
<div id="item_36" class="item_details">
</div>
<div id="item_37" class="item_details">
</div>
<!-- this list of DIVs "item_xx" goes on for a while
each one representing a photo with name, caption etcetc -->
</div>
</div>
<br class="clear"/>
<div id="footer">
</div> …