要创建带有内联元素的表单，请在Bootstrap中使用form-inline类。
您可以尝试运行以下代码来实现此目的
<!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-inline" role = "form"> <div class = "form-group"> <label class = "sr-only" for = "name">Name</label> <input type = "text" class = "form-control" id = "name" placeholder = "Enter Name"> </div> <div class = "form-group"> <label class = "sr-only" for = "inputfile">File input</label> <input type = "file" id = "inputfile"> </div> <div class = "checkbox"> <label><input type = "checkbox">Check for Newsletter</label> </div> <button type = "submit" class = "btn btn-default">Submit</button> </form> </body> </html>