简单教程
提交运行
代码编辑器：
<meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="/static/lib/bootstrap/4.0.0/css/bootstrap.min.css"> <script src="/static/lib/jquery/3.3.1/jquery.min.js"></script> <script src="/static/lib/popper.js/1.12.9/umd/popper.min.js"></script> <script src="/static/lib/bootstrap/4.0.0/js/bootstrap.min.js"></script> <div class="container"> <h2>Code</h2> <p>For multiple lines of code, use the pre element:</p> <pre>Text in a pre element is displayed in a fixed-width font, and it preserves both spaces and line breaks.</pre> <p>If you add the .pre-scrollable class, the pre element gets a max-height of 350px and provides a y-axis scrollbar:</p> <pre class="pre-scrollable">Text in a pre element is displayed in a fixed-width font, and it preserves both spaces and line breaks.</pre> </div>
运行结果：