<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container">
<div class="row">
<h2>EQUAL COLS</h2></h2>
</div>
</div>
<div class="container">
<div class="row display-flex">
<div class="col-lg-4 col-md-6 col-sm-12">
<div class="box">
<img src="//placehold.it/150x50" class="center-block">
<h3>Some text</h3>
<a hre="" class="btn">BOTON</a>
</div>
</div>
<div class="col-lg-4 col-md-6 col-sm-12">
<div class="box">
<img src="//placehold.it/150x50" class="center-block">
<h3>Some text</h3>
<a hre="" class="btn">BOTON</a>
</div>
</div>
<div class="col-lg-4 col-md-6 col-sm-12">
<div class="box">
<img src="//placehold.it/150x50" class="center-block">
<h3>Some text more more more more more more more more more more more more text that wraps to new link</h3>
<a hre="" class="btn">BOTON</a>
</div>
</div>
<div class="col-lg-4 col-md-6 col-sm-12">
<div class="box">
<img src="//placehold.it/150x50" class="center-block">