Bootstrap 4 .flex-*-column-reverse类
使用flex-*-column-reverse类可以在不同的屏幕尺寸上垂直显示和反转显示弹性项目。
这是使用“flex-md-column-reverse”类在媒体设备上反转flex项目的示例-
<div class="d-flex flex-md-column-reverse mb-3"> <div class="p-2 bg-warning">One</div> <div class="p-2 bg-danger">Two</div> <div class="p-2 bg-secondary">Three</div> </div>
以相同的方式，使用“flex-lg-column-reverse”类为大型设备设置-
<div class="d-flex flex-lg-column-reverse mb-3"> <div class="p-2 bg-warning">One</div> <div class="p-2 bg-danger">Two</div> <div class="p-2 bg-secondary">Three</div> </div>
实现.flex-*column-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>Example</h2>
<p>Change the browser size to see the effect:<p>
<p>Default </p>
<div class="d-flex flex-column">
<div class="p-2 bg-primary">One</div>
<div class="p-2 bg-secondary">Two</div>
<div class="p-2 bg-info">Three</div>
</div>
<p>Flex on differet screen size (Medium-Reverse)</p>
<div class="d-flex flex-md-column-reverse mb-3">
<div class="p-2 bg-warning">One</div>
<div class="p-2 bg-danger">Two</div>
<div class="p-2 bg-secondary">Three</div>
</div>
<p>Flex on different screen size (Large-Reverse)</p>
<div class="d-flex flex-lg-column-reverse mb-3">
<div class="p-2 bg-warning">One</div>
<div class="p-2 bg-danger">Two</div>
<div class="p-2 bg-secondary">Three</div>
</div>
</div>
</body>
</html>