<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 ----------> <div class="container-fluid"> <div class="row"> <div class="col-sm-3 sidenav hidden-xs"> <img src="../Images/sigla.png" style="width: 50px;" alt="Logo"/> <h2>LOGO</h2> <ul class="nav nav-pills nav-stacked"> <li><a href="#section1">Dashboard</a></li> <li class="active"><a href="#section2">Utilizatori</a></li> <li><a href="#section3">Colegi</a></li> <li><a href="#section4">Departamente</a></li> <li><a href="#section5">Echipe</a></li> <li><a href="#section3">Concediu</a></li> <li><a href="#section4">Documente</a></li> <li><a href="#section5">Pontaj</a></li> <li><a href="#section6">Rapoarte</a></li> </ul> </div> <div class="row"> <div class="col-sm-3" style="margin-right:1em; background-color:lavender">.col-sm-3</div> <div class="col-sm-4" style="margin-right:1em; background-color:lavenderblush">.col-sm-3</div> <div class="col-sm-3" style="margin-right:1em; background-color:lightcyan">.col-sm-3</div> </div> </div> </div>