要在Bootstrap中创建水平布局，请使用form-horizontal类。
您可以尝试运行以下代码-
<!DOCTYPE html> <html> <head> <title>Bootstrap Example</title> <meta name = "viewport" content = "width=device-width, initial-scale = 1"> <link rel = "stylesheet" href = "https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css"> <script src = "https://cdn.staticfile.org/jquery/3.3.1/jquery.min.js"></script> <script src = "https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script> </head> <body> <form class = "form-horizontal" role = "form"> <div class = "form-group"> <label for = "name" class = "col-sm-2 control-label">Name</label> <div class = "col-sm-10"> <input type = "text" class = "form-control" id = "name" placeholder = "Enter Name"> </div> </div> <div class = "form-group"> <label for = "country" class = "col-sm-2 control-label">Country</label> <div class = "col-sm-10"> <input type = "text" class = "form-control" id = "country" placeholder = "Enter Country"> </div> </div> <div class = "form-group"> <div class = "col-sm-offset-2 col-sm-10"> <button type = "submit" class = "btn btn-default">Sign in</button> </div> </div> </form> </body> </html>