<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> <!------ Include the above in your HEAD tag ----------> <div class="container"> <br><br> <div class="row text-center" style="margin-bottom: 50px;"> <img src="http://www.crealia.org/crealia/logo.png"> </div> <div class="row text-center" style="margin-bottom: 20px;"> <button type="button" class="btn btn-circle" style="background: rgb(29, 187, 234);">gérer les colleges</button> <button type="button" class="btn btn-circle"style="background-color: rgb(38, 128, 184);">gérer les projets</button> <button type="button" class="btn btn-circle"style="background-color: rgb(228, 80, 19);">gérer les projets</button> </div> <div class="row text-center"> <button type="button" class="btn btn-circle" style="background: rgb(29, 187, 234); opacity:1;">gérer les colleges</button> <button type="button" class="btn btn-circle"style="background-color: rgb(38, 128, 184); opacity:1;">gérer les projets</button> <button type="button" class="btn btn-circle"style="background-color: rgb(228, 80, 19); opacity:1;">gérer les projets</button> </div> </div>

body { } .btn-circle { text-align: center; width: 150px; height: 150px; padding: 10px 16px; font-size: 18px; line-height: 1.33; border-radius: 75px; white-space: normal; color: white; text-transform: uppercase; font-weight: 700; opacity: 0.75; } .btn-circle:hover { color: white; opacity: 1; }