用Bootstrap创建一个大按钮
要创建一个大按钮，请使用Bootstrap中的.btn-lg类。
您可以尝试运行以下代码来实现.btn-lg类-
示例
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap Example</title>
<link rel = "stylesheet" href = "https://maxcdn.bootstrapcdn.com/bootstrap/4.1.1/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/4.1.1/js/bootstrap.min.js"></script>
</head>
<body>
<p>The following are FMCG companies:</p>
<div class = "btn-default">
<button type = "button" class="btn btn-primary">ITC Limited</button>
<button type = "button" class="btn btn-sm">Nestle</button>
<button type = "button" class="btn btn-lg">Britannia Industries Limited</button>
</div>
</body>
</html>