要以相反顺序包装flex项目，您需要在Bootstrap中使用flex-wrap-reverse类。
要包装反向flex项目，请使用flex-wrap-reverse类-
<div class="d-flex flex-wrap-reverse bg-secondary text-white">
现在相应地添加弹性项目-
<div class="d-flex flex-wrap-reverse bg-secondary text-white"> <div class="p-2 border">Rank 1</div> <div class="p-2 border">Rank 2</div> <div class="p-2 border">Rank 3</div> <div class="p-2 border">Rank 4</div> </div>
让我们看一个例子来实现flex-wrap-reverse类-
<!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"> <h2>Wrap</h2> <p>Flex Wrap</p> <div class="d-flex flex-wrap bg-secondary text-white"> <div class="p-2 border">Rank 1</div> <div class="p-2 border">Rank 2</div> <div class="p-2 border">Rank 3</div> <div class="p-2 border">Rank 4</div> <div class="p-2 border">Rank 5</div> <div class="p-2 border">Rank 6</div> <div class="p-2 border">Rank 7</div> <div class="p-2 border">Rank 8</div> <div class="p-2 border">Rank 9</div> <div class="p-2 border">Rank 10</div> <div class="p-2 border">Rank 11</div> <div class="p-2 border">Rank 12</div> <div class="p-2 border">Rank 13</div> <div class="p-2 border">Rank 14</div> <div class="p-2 border">Rank 15</div> <div class="p-2 border">Rank 16</div> <div class="p-2 border">Rank 17</div> <div class="p-2 border">Rank 18</div> <div class="p-2 border">Rank 19</div> <div class="p-2 border">Rank 20</div> </div><br> <p>Flex Wrap - Reverse</p> <div class="d-flex flex-wrap-reverse bg-secondary text-white"> <div class="p-2 border">Rank 1</div> <div class="p-2 border">Rank 2</div> <div class="p-2 border">Rank 3</div> <div class="p-2 border">Rank 4</div> <div class="p-2 border">Rank 5</div> <div class="p-2 border">Rank 6</div> <div class="p-2 border">Rank 7</div> <div class="p-2 border">Rank 8</div> <div class="p-2 border">Rank 9</div> <div class="p-2 border">Rank 10</div> <div class="p-2 border">Rank 11</div> <div class="p-2 border">Rank 12</div> <div class="p-2 border">Rank 13</div> <div class="p-2 border">Rank 14</div> <div class="p-2 border">Rank 15</div> <div class="p-2 border">Rank 16</div> <div class="p-2 border">Rank 17</div> <div class="p-2 border">Rank 18</div> <div class="p-2 border">Rank 19</div> <div class="p-2 border">Rank 20</div> </div> </div> </body> </html>