Bootstrap 4 .flex-*-row-reverse类的实现
要将flex项目实现为在不同屏幕尺寸上显示为反向，水平和右对齐，请使用flex-*-row-reverse。
不同的屏幕尺寸适用于小，中，大和特大屏幕。让我们看看如何为小屏幕设置反向柔韧性项目-
<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>
您可以尝试运行以下代码来实现flex-*-row-reverse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.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>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>
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