<html>
<head>
<title>Bootstrap 实例 - 表单控件大小</title>
<link href="https://libs.baidu.com/bootstrap/3.0.3/css/bootstrap.min.css" rel="stylesheet">
<script src="https://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script src="https://libs.baidu.com/bootstrap/3.0.3/js/bootstrap.min.js"></script>
</head>
<body>
<form role="form">
<div class="form-group">
<input class="form-control input-lg" type="text" placeholder=".input-lg">
</div>
<div class="form-group">
<input class="form-control" type="text" placeholder="默认输入">
</div>
<div class="form-group">
<input class="form-control input-sm" type="text" placeholder=".input-sm">
</div>
<div class="form-group">
</div>
<div class="form-group">
<select class="form-control input-lg">
<option value="">.input-lg</option>
</select>
</div>
<div class="form-group">
<select class="form-control">
<option value="">默认选择</option>
</select>
</div>
<div class="form-group">
<select class="form-control input-sm">
<option value="">.input-sm</option>
</select>
</div>
<div class="row">
<div class="col-lg-2">
<input type="text" class="form-control" placeholder=".col-lg-2">
</div>
<div class="col-lg-3">
<input type="text" class="form-control" placeholder=".col-lg-3">
</div>
<div class="col-lg-4">
<input type="text" class="form-control" placeholder=".col-lg-4">
</div>
</div>
</form>
</body>
</html>