源代码：
左右布局
点击运行
<!DOCTYPE html> <html> <head> <title>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.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <div class="container"> <h2>堆叠表单</h2> <form> <div class="form-group"> <label for="email">Email:</label> <input type="email" class="form-control" id="email" placeholder="Enter email"> </div> <div class="form-group"> <label for="pwd">Password:</label> <input type="password" class="form-control" id="pwd" placeholder="Enter password"> </div> <div class="form-check"> <label class="form-check-label"> <input class="form-check-input" type="checkbox"> Remember me </label> </div> <button type="submit" class="btn btn-primary">Submit</button> </form> </div> </body> </html>
运行结果