<div class="container">
<div class="lines">
<div class="row">
<div class="col-xs-3">3 колонки</div>
<div class="col-xs-5 col-xs-offset-1">5 колонок</div>
<div class="col-xs-2 col-xs-offset-1">2 колонки</div>
</div>
</div>
<div class="lines">
<div class="row">
<div class="col-xs-3">3 колонки</div>
<div class="col-xs-5 col-xs-offset-1">5 колонок</div>
<div class="col-xs-2 col-xs-offset-1">2 колонки</div>
</div>
</div>
</div>
.lines {margin-bottom: 30px;}