编程教程示范演示-小库网

Bootstrap 实例</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://cdn.staticfile.net/twitter-bootstrap/4.3.1/css/bootstrap.min.css">
  <script src="https://cdn.staticfile.net/jquery/3.2.1/jquery.min.js"></script>
  <script src="https://cdn.staticfile.net/popper.js/1.15.0/umd/popper.min.js"></script>
  <script src="https://cdn.staticfile.net/twitter-bootstrap/4.3.1/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>