像一组一样创建Bootstrap 4卡网格的容器
要为Bootstrap卡设置容器并将其设置为组，请使用card-group类。
使用它并使用两个Bootstrap卡创建如下所示的网格-
<div class="card-group">
<div class="card bg-primary">
<div class="card-body text-center">
<p class="card-text">Demo Text!</p>
</div>
</div>
<div class="card bg-warning">
<div class="card-body text-center text-white">
<p class="card-text">Warning!</p>
</div>
</div>
</div>以下是在Bootstrap中创建网格（卡组）的示例-
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">
<h3>Group of Messages</h3>
<div class="card-group">
<div class="card bg-primary">
<div class="card-body text-center">
<p class="card-text">Demo Text!</p>
</div>
</div>
<div class="card bg-warning">
<div class="card-body text-center text-white">
<p class="card-text">Warning!</p>
</div>
</div>
<div class="card bg-success">
<div class="card-body text-center">
<p class="card-text">Well done!</p>
</div>
</div>
<div class="card bg-success">
<div class="card-body text-center">
<p class="card-text">Selected!</p>
</div>
</div>
</div>
</div>
</body>
</html>