<div style="width: 450px;">
    <form class="form-horizontal" method="post">
        <div class="control-group">
            <input type="text" id="account" placeholder="酷办公账号">
        </div>
        <div class="control-group">
            <input type="password" id="password" placeholder="密码">
        </div>
    </form>
</div>
