Bootstrap 4 实例
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="css/bootstrap.min.css" />
<title>Bootstrap</title>
</head>
<body>
<h1>Hello, world!</h1>
<script src="js/jquery-3.3.1.slim.min.js"></script>
<script src="js/popper-1.14.7.min.js"></script>
<script src="js/bootstrap.min.js"></script>
</body>
</html>
下载:Bootstrap 4
Bootstrap 3 实例
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
<title>首页</title>
<link href="css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<form method="post" action="">
<div class="form-group">
<label>用户名</label>
<input type="text" class="form-control" placeholder="">
</div>
<div class="form-group">
<label>密码</label>
<input type="password" class="form-control" placeholder="">
</div>
<div class="form-group">
<label>选择文件</label>
<input type="file">
<p class="help-block">最大10M</p>
</div>
<div class="checkbox">
<label>
<input type="checkbox"> 记住我
</label>
</div>
<button type="submit" class="btn btn-default">登录</button>
</form>
</div>
<script src="js/jquery-1.11.2.min.js"></script>
<script src="js/bootstrap.min.js"></script>
</body>
</html>
下载:Bootstrap 3