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<!DOCTYPE html> <html> <head> <title>Bootstrap5 实例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link href="https://cdn.staticfile.net/twitter-bootstrap/5.1.1/css/bootstrap.min.css" rel="stylesheet"> <script src="https://cdn.staticfile.net/twitter-bootstrap/5.1.1/js/bootstrap.bundle.min.js"></script> </head> <body> <div class="container mt-3"> <h2>表单浮动标签 - textarea</h2> <p>点击文本框查看浮动效果:</p> <form action="/action_page.php"> <div class="form-floating mb-3 mt-3"> <textarea class="form-control" id="comment" name="text" placeholder="Comment goes here"></textarea> <label for="comment">Comments</label> </div> <button type="submit" class="btn btn-primary">Submit</button> </form> </div> </body> </html>
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