bootstrap 2.0是否有任何助手可以使.span1,.span2 ...... .span12等于高度.我已经嵌套了这种类型的HTML
<div class='container'>
<div class='row'>
<div class='span2'>
<div class='well'>
XXXX
</div>
</div>
<div class='span2'>
<div class='well'>
XXXX
XXXX
</div>
</div>
<div class='span2'>
<div class='well'>
XXXX
XXXX
XXXX
</div>
</div>
</div>
</div>
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如果可能的话,我希望每个井都达到相同的高度?