如果要在不同屏幕尺寸的右侧浮动元素，请使用float-*-right类，即
以下是针对小型，中型，大型和超大型设备的-
<div class="float-sm-right"> This text is on the right (on small screen). </div> <div class="float-md-right"> This text is on the right (on medium screen). </div> <div class="float-lg-right"> This text is on the right (on large screen). </div> <div class="float-xl-right"> This text is on the right (on extra large screen) </div>
让我们看一个完整的示例，以在不同的屏幕尺寸上向右浮动元素-
<!DOCTYPE html> <html lang="en"> <head> <title>Bootstrap Example</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.3.1/jquery.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script> </head> <body> <div class="container"> <h2>Example</h2> <div class="clearfix"> <div class="float-sm-right">This text is on the right (on small screen).</div><br> <div class="float-md-right">This text is on the right (on medium screen).</div><br> <div class="float-lg-right">This text is on the right (on large screen).</div><br> <div class="float-xl-right">This text is on the right (on extra large screen).</div><br> </div> </div> </body> </html>