<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>
<div class="container">
<div class="row py-3 no-gutters">
<!-- single project -->
<div class="col-sm-6 col-md-4 my-3 bir">
1
</div>
<!-- end of single project -->
<!-- single project -->
<div class="col-sm-6 col-md-4 my-3 iki">
2
</div>
<!-- end of single project -->
<!-- single project -->
<div class="col-sm-6 col-md-4 my-3 uc">
3
</div>
<!-- end of single project -->
</div>
</div>