v class="demo-item">
        <p class="demo-desc">布局2</p>
        <div class="demo-block">
            <header class="ui-header ui-header-positive ui-border-b">
                <h1>标题</h1>
            </header>
            <div class="ui-footer ui-footer-stable ui-btn-group ui-border-t">
                <button class="ui-btn-lg">
                    拒绝
                </button>
                <button class="ui-btn-lg">
                    拒绝
                </button>
                <button