简单教程
提交运行
代码编辑器：
<!DOCTYPE htm> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"> <script src="https://cdn.bootcss.com/jquery/1.12.4/jquery.js"></script> <script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> <style>body {margin:20px}</style> <div class="btn-group btn-group-lg"> <button type="button" class="btn btn-default">按钮 1</button> <button type="button" class="btn btn-default">按钮 2</button> <button type="button" class="btn btn-default">按钮 3</button> </div> <br/><br/> <div class="btn-group btn-group-sm"> <button type="button" class="btn btn-default">按钮 4</button> <button type="button" class="btn btn-default">按钮 5</button> <button type="button" class="btn btn-default">按钮 6</button> </div> <br/><br/> <div class="btn-group btn-group-xs"> <button type="button" class="btn btn-default">按钮 7</button> <button type="button" class="btn btn-default">按钮 8</button> <button type="button" class="btn btn-default">按钮 9</button> </div>
运行结果：