Lungo2.0.js/example/app/articles/grid.html

<article id="grid" class="indented">
    <div class="layout">
        <div>&nbsp;</div>
        <div data-layout="secondary" class="bck accept">&nbsp;</div>
        <div data-layout="primary" class="bck cancel">&nbsp;</div>
        <br/>
        <div>
            <div class="layout horizontal">
                <div>&nbsp;</div>
                <div data-layout="secondary" class="bck accept">&nbsp;</div>
                <div data-layout="primary" class="bck cancel">&nbsp;</div>
            </div>
        </div>
    </div>
</article>