html运行实例（bs_utility_center）-搜寻教程库

代码示例：（标识：bs_utility_center）

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap 实例</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/5.1.2/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/5.1.2/js/bootstrap.bundle.js"></script>
</head>
<body>

<div class="p-4">
  <h1>水平居中</h1>
  <p>使用 .mx-auto 类居中元素：</p>
  <div class="mx-auto bg-warning" style="width:150px">居中</div>
</div>

</body>
</html>