为什么在 IE7 中输入会脱离其容器?
<div class="row-fluid" style="margin-top:10px;">
<div class="span12">
<div class="row-fluid">
<div class="span6">
<div class="row-fluid">
<div class="span6 " style="background:green;">
<input type="text" class="span12">
</div>
<div class="span6" style="background:blue;">
<input type="text" class="span12">
</div>
</div>
</div>
<div class="span6">
<div class="row-fluid">
<div class="span6" style="background:green;">
<input type="text" class="span12">
</div>
<div class="span6" style="background:blue;">
<input type="text" class="span12">
</div>
</div>
</div>
</div>
</div>
</div>
</p>
更新:我想这是盒子模型和宽度问题,但是有引导程序的解决方案吗?