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/2.3.2/css/bootstrap.min.css" rel="stylesheet"> <style>body {margin:10px}</style> <div class="alert"> <a class="close" data-dismiss="alert">×</a> <strong>Warning!</strong> Best check yo self, you're not looking too good. </div> <script src="/static/lib/bootstrap/2.3.2/docs/assets/js/jquery.js"></script> <script src="/static/lib/bootstrap/2.3.2/docs/assets/js/bootstrap.min.js"></script>
运行结果：