<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>

.bir { background-color: #f1f1f1; } .iki { background-color: #d1d1d1; } .uc { background-color: #b1b1b1; }