Bootstrap 4中的Bootstrap 4 .flex-column
使用flex-column类垂直显示flex项目-
<div class="d-flex flex-column mb-3"> </div>
您现在需要在flex-column类中添加flex-item-
<div class="d-flex flex-column mb-3">
<div class="p-2 bg-primary">
First
</div>
<div class="p-2 bg-secondary">
Second
</div>
</div>让我们看一个例子来学习如何在Bootstrap4中实现flex-column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 Column</h2>
<div class="d-flex flex-column mb-3">
<div class="p-2 bg-primary">First</div>
<div class="p-2 bg-secondary">Second</div>
<div class="p-2 bg-warning">Third</div>
<div class="p-2 bg-danger">Fourth</div>
<div class="p-2 bg-info">Fifth</div>
</div>
</div>
</body>
</html>