使用Bootstrap为列表组中的列表项设置警告措施
要为列表组中的列表项设置警告措施，请使用.list-group-item-warning类
示例
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap Example</title>
<link href = "/bootstrap/css/bootstrap.min.css" rel = "stylesheet">
<script src = "/scripts/jquery.min.js"></script>
<script src = "/bootstrap/js/bootstrap.min.js"></script>
</head>
<body>
<div class = "container">
<h1>Demo</h1>
<ul class = "list-group">
<li class = "list-group-item">
<p class = "list-group-item-text">A</p>
</li>
<li class = "list-group-item">
<p class = "list-group-item-text">B</p>
</li>
<li class = "list-group-item">
<p class = "list-group-item-text list-group-item-warning">C</p>
</li>
<li class = "list-group-item">
<p class = "list-group-item-text">D</p>
</li>
</ul>
</div>
</body>
</html>