<form class="form-signin" role="form">
		<input type="text" class="form-control" placeholder="用户名" required autofocus />
		<input type="password" class="form-control" placeholder="密码" required />
		<button class="btn btn-lg btn-warning btn-block" type="submit">登录</button>
		<label class="checkbox">
			<input type="checkbox" value="remember-me"> 记住我
		</label>
	</form>
</div>