Reference:
http://*.com/questions/20547819/vertical-align-with-bootstrap-3?answertab=votes#tab-top
.vcenter {
display: inline-block;
vertical-align: middle;
float: none;
}
and coomment trick for extra space:
<div class="row">
<div class="col-xs-5 col-md-3 col-lg-1 vcenter">
<div style="height:10em;border:1px solid #000">Big</div>
</div><!--
--><div class="col-xs-5 col-md-7 col-lg-9 vcenter">
<div style="height:3em;border:1px solid #F00">Small</div>
</div>
</div>
TODO:
flexbox