<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 ----------> <button type="button" class="btn btn-default btn-circle">5</button> <button type="button" class="btn btn-primary btn-circle">5</button> <button type="button" class="btn btn-success btn-circle">5</button> <button type="button" class="btn btn-info btn-circle">5</button> <button type="button" class="btn btn-warning btn-circle">5</button> <button type="button" class="btn btn-danger btn-circle">5</button> <h2>lg</h2> <button type="button" class="btn btn-default btn-circle btn-lg">10</button> <button type="button" class="btn btn-primary btn-circle btn-lg">10</button> <button type="button" class="btn btn-success btn-circle btn-lg">10</button> <button type="button" class="btn btn-info btn-circle btn-lg">10</button> <button type="button" class="btn btn-warning btn-circle btn-lg">10</button> <button type="button" class="btn btn-danger btn-circle btn-lg">10</button> <h2>xl</h2> <button type="button" class="btn btn-default btn-circle btn-xl">15</button> <button type="button" class="btn btn-primary btn-circle btn-xl">15</button> <button type="button" class="btn btn-success btn-circle btn-xl">15</button> <button type="button" class="btn btn-info btn-circle btn-xl">15</button> <button type="button" class="btn btn-warning btn-circle btn-xl">15</button> <button type="button" class="btn btn-danger btn-circle btn-xl">15</button>

body{margin:40px;} .btn-circle { width: 30px; height: 30px; text-align: center; padding: 6px 0; font-size: 12px; line-height: 1.428571429; border-radius: 15px; } .btn-circle.btn-lg { width: 50px; height: 50px; padding: 10px 16px; font-size: 18px; line-height: 1.33; border-radius: 25px; } .btn-circle.btn-xl { width: 70px; height: 70px; padding: 10px 16px; font-size: 24px; line-height: 1.33; border-radius: 35px; }