CSS - 实例：带有固定宽度的预格式化文本 - 在线编辑器

          <html>
<!DOCTYPE html>
<html>
<body>

  <p>Standard pre</p>
  <pre>This is a standard pre. It will use as much space as it needs.</pre>

  <p>pre with a fixed width:</p>
  <div style="width:200px;overflow:auto">
    <pre>This is a pre with a fixed width. It will use as much space as specified.</pre>
  </div>

</body>
</html>
        