Bootstrap 4 Button .btn-outline-info类
要在指示信息的按钮上设置轮廓，您需要使用Bootstrap中的btn-outline-info类。
包括button元素并设置btn-outline-info类-
<button type="button" class="btn btn-outline-info"> More Info </button>
您可以尝试运行以下代码以实现btn-outline-info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>
<h2>Event</h2>
<p>The following are the details:</p>
<ul class = "list-group">
<li class = "list-group-item">Event Timings 1PM TO 4PM</li>
<li class = "list-group-item">Venue: 21 KH, HG Lane, Alabama</li>
</ul>
<p>For more information about the event:</p>
<button type="button" class="btn btn-outline-info">More Info</button>
</body>
</html>