<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>
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