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法律学在特定屏幕尺寸上，显示 Bootstrap 4 中对齐且水平排列的 flex 元素
要在特定屏幕尺寸上显示水平排列的 flex 元素，请在 Bootstrap 4 中使用 flex-*-row-reverse 类。
让我们看看如何在不同的屏幕尺寸上设置反向 flex 元素 −
Small Screen Size: flex-sm-row-reverse Medium Screen Size: flex-md-row-reverse Large Screen Size: flex-lg-row-reverse
你可以尝试运行以下代码在不同的屏幕尺寸上显示反向 flex 元素 −
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://ajax.googleapis.com/ajax/libs/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>Flex Row</h2> <div class="d-flex flex-row bg-primary mb-3"> <div class="p-2 bg-danger">ONE</div> <div class="p-2 bg-primary">TWO</div> <div class="p-2 bg-warning">THREE</div> </div> <h2>Flex Row Reverse</h2> <div class="d-flex flex-row-reverse bg-primary mb-3"> <div class="p-2 bg-primary">ONE</div> <div class="p-2 bg-secondary">TWO</div> <div class="p-2 bg-danger">THREE</div> </div> <h2>Flex Row Reverse (Small Width)</h2> <div class="d-flex flex-sm-row-reverse bg-primary mb-3"> <div class="p-2 bg-primary">ONE</div> <div class="p-2 bg-secondary">TWO</div> <div class="p-2 bg-danger">THREE</div> </div> <h2>Flex Row Reverse (Medium Width)</h2> <div class="d-flex flex-md-row-reverse bg-primary mb-3"> <div class="p-2 bg-primary">ONE</div> <div class="p-2 bg-secondary">TWO</div> <div class="p-2 bg-danger">THREE</div> </div> <h2>Flex Row Reverse (Large Width)</h2> <div class="d-flex flex-lg-row-reverse bg-primary mb-3"> <div class="p-2 bg-primary">ONE</div> <div class="p-2 bg-secondary">TWO</div> <div class="p-2 bg-danger">THREE</div> </div> </div> </body> </html>
更新时间： 18-6-2020
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