避免使用.flex-nowrap类将flex项包装在Bootstrap 4中。
在下面，您可以看到弹性项目在“八个”弹性项目之后没有包装-
flex是在div类中设置的，就像我们在<div>-中添加任何其他类一样：
<div class="d-flex flex-nowrap bg-primary">
以下是实现flex-nowrap类以避免包装flex项目的示例-
<!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 mt-3"> <h3>FLEX WRAP AND NOWRAP</h3> <p>Flex items will wrap</p> <div class="d-flex flex-wrap bg-primary"> <div class="p-2 border">One</div> <div class="p-2 border">Two</div> <div class="p-2 border">Three</div> <div class="p-2 border">Four</div> <div class="p-2 border">Five</div> <div class="p-2 border">Six</div> <div class="p-2 border">Seven</div> <div class="p-2 border">Eight</div> <div class="p-2 border">Nine</div> </div><br> <p>Flex items won't wrap</p> <div class="d-flex flex-nowrap bg-primary"> <div class="p-2 border">One</div> <div class="p-2 border">Two</div> <div class="p-2 border">Three</div> <div class="p-2 border">Four</div> <div class="p-2 border">Five</div> <div class="p-2 border">Six</div> <div class="p-2 border">Seven</div> <div class="p-2 border">Eight</div> <div class="p-2 border">Nine</div> </div><br> </div> </body> </html>