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> <p>设置 pre 元素可滚动：</p> <pre class="pre-scrollable"> 内容可滚动 Text in a pre element is displayed in a fixed-width font, and it preserves both spaces and line breaks. Text in a pre element is displayed in a fixed-width font, and it preserves both spaces and line breaks. </pre>
运行结果：