Ionic 2 responsive grid : <p>How can I make a responsive grid in Ionic 2? Ionic 1 supported reserved classes like <code>responsive-md</code> or <code>responsive-sm</code> that made grids responsive, but they don't seem to work in Ionic 2.</p>

<p>In my case I have an <code>&lt;ion-row&gt;</code> with three <code>&lt;ion-col&gt;</code>. I would like the columns to drop below each other when the display width drops below a threshold. Is it possible to do this with Ionic 2? </p>
