代码示例:(标识:bs_img_align)
<!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.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>对齐图像</h2>
  <p>使用浮动类将图像向左或向右浮动:</p> 
  <img src="/static/demo/images/tulip.jpg" class="float-start" alt="Tulip" width="300" height="300"> 
  <img src="/static/demo/images/tulip-2.jpg" class="float-end" alt="Tulip" width="300" height="300"> 
</div>

</body>
</html>
运行结果: