I'm not sure if I understood your problem correctly, but if you are looking for a solution to horizontally align columns within a row, or to normalize heights of columns within a row, then you should take look at this awesome jQuery script:
http://brm.io/jquery-match-height/
We are using it in a dozen projects when trying to horizontally align an unknown number of "div.col-*" of unknown height within a "div.row". Our common approach looks somethin like this
<div class="row normalizeMe">
<div class="col-sm-6 col-md-4">unknown height...</div>
<div class="col-sm-6 col-md-4">unknown height...</div>
<div class="col-sm-4">unknown height...</div>
<div class="col-sm-4">unknown height...</div>
<div class="col-sm-4">unknown height...</div>
<div class="col-sm-4">unknown height...</div>
</div>
<script>
$('.row.normalizeMe > div[class*="col-"]').matchHeight();
</script>
No matter which screen size or how large the boxes are, the script will always nicely align your col-- horizontally. It should also work to normalize the height of the container of your slides.