在最新版本的Twitter bootstrap中如何设置8个相等的列.
我可以通过执行以下操作来创建4个相等的列,但不能得到如何得到8：
<div class="col-sm-12">
<div class="row">
<div class="col-sm-3">
<div class="col-sm-12 col-xs-6">
<a href="#"><img src="/image.png" class="img-responsive" alt="..."></a>
</div>
</div>
<div class="col-sm-3">
<div class="col-sm-12 col-xs-6">
<a href="#"><img src="/image.png" class="img-responsive" alt="..."></a>
</div>
</div>
<div class="col-sm-3">
<div class="col-sm-12 col-xs-6">
<a href="#"><img src="/image.png" class="img-responsive" alt="..."></a>
</div>
</div>
<div class="col-sm-3">
<div class="col-sm-12 col-xs-6">
<a href="#"><img src="/image.png" class="img-responsive" alt="..."></a>
</div>
</div>
</div>
</div>
