<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="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> <!------ Include the above in your HEAD tag ----------> <div class="row"> <div class="col-lg-4 col-md-4 col-sm-12 col-xs-12 video1"> <iframe src="https://www.youtube.com/embed/ZgWI3D2fF0Y?rel=0&showinfo=0" frameborder="0"></iframe> </div> <div class="col-lg-4 col-md-4 col-sm-12 col-xs-12 video2"> <iframe src="https://www.youtube.com/embed/ZgWI3D2fF0Y?rel=0&showinfo=0" frameborder="0" allowfullscreen="allowfullscreen"> </iframe></div> <div class="col-lg-4 col-md-4 col-sm-12 col-xs-12 video3"> <iframe src="https://www.youtube.com/embed/ZgWI3D2fF0Y?rel=0&showinfo=0" frameborder="0" allowfullscreen="allowfullscreen"> </iframe></div> </div>

.video1, .video2, .video3 { position: relative; padding-bottom: 56.25%; /* 16:9 */ padding-top: 25px; height: 0; } .video1 iframe, .video2 iframe, .video3 iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }