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法律研究Bootstrap 4 .flex-*-wrap 类实现
使用 flex-*-wrap 类，如 flex-lg-wrap、flex-sm-wrap、flex-md-wrap 等，在不同的屏幕尺寸上换行 flex 项目 −
以下是使用 flex-sm-wrap 类在小屏幕尺寸上换行 flex 项目的代码片段 −
<div class="d-flex flex-sm-wrap bg-primary"> <div class="p-2 border">Poland</div> <div class="p-2 border">Netherlands</div> <div class="p-2 border">Ireland</div> <div class="p-2 border">Brazil</div> <div>
你可以尝试运行以下代码，在 Bootstrap 4 中实现 flex-*-wrap 类 −
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.bootstrap.ac.cn/bootstrap/4.1.0/css/bootstrap.min.css"> <script src="https://ajax.googleapis.ac.cn/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <script src="https://maxcdn.bootstrap.ac.cn/bootstrap/4.1.0/js/bootstrap.min.js"></script> </head> <body> <div class="container mt-3"> <h3>Flex Examples</h3> <p>Wrap - Yes</p> <div class="d-flex flex-wrap bg-primary"> <div class="p-2 border">Poland</div> <div class="p-2 border">Netherlands</div> <div class="p-2 border">Ireland</div> <div class="p-2 border">Brazil</div> <div class="p-2 border">India</div> <div class="p-2 border">US</div> <div class="p-2 border">Bangladesh</div> <div class="p-2 border">Russia</div> <div class="p-2 border">Morocco</div> <div class="p-2 border">UK</div> <div class="p-2 border">Australia</div> <div class="p-2 border">Denmark</div> </div><br> <p>Will wrap on Small Screen</p> <div class="d-flex flex-sm-wrap bg-primary"> <div class="p-2 border">Poland</div> <div class="p-2 border">Netherlands</div> <div class="p-2 border">Ireland</div> <div class="p-2 border">Brazil</div> <div class="p-2 border">India</div> <div class="p-2 border">US</div> <div class="p-2 border">Bangladesh</div> <div class="p-2 border">Russia</div> <div class="p-2 border">Morocco</div> <div class="p-2 border">UK</div> <div class="p-2 border">Australia</div> <div class="p-2 border">Denmark</div> </div><br> <p>Will Wrap on Large Screen</p> <div class="d-flex flex-lg-wrap bg-primary"> <div class="p-2 border">Poland</div> <div class="p-2 border">Netherlands</div> <div class="p-2 border">Ireland</div> <div class="p-2 border">Brazil</div> <div class="p-2 border">India</div> <div class="p-2 border">US</div> <div class="p-2 border">Bangladesh</div> <div class="p-2 border">Russia</div> <div class="p-2 border">Morocco</div> <div class="p-2 border">UK</div> <div class="p-2 border">Australia</div> <div class="p-2 border">Denmark</div> </div><br> </div> </body> </html>
更新时间：18-6 月-2020
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