<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet"
href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<h2>Block Level Buttons in Bootstrap</h2>
<button type="button" class="btn btn-primary btn-block">Block Button Primary</button>
<button type="button" class="btn btn-default btn-block">Block Button Default</button>
<h2>Large Block Level Buttons in Bootstrap</h2>
<button type="button" class="btn btn-primary btn-lg btn-block">Large Block Button Primary</button>
<button type="button" class="btn btn-default btn-lg btn-block">Large Block Button Default</button>
<h2>Small Block Level Buttons in Bootstrap</h2>
<button type="button" class="btn btn-primary btn-sm btn-block">Small Block Button Primary</button>
<button type="button" class="btn btn-default btn-sm btn-block">Small Block Button Default</button>
</div>
</body>
</html>
