Ion-pane within ion-slide

I’m having hard time giving height to my ionic slides. I could go with responsive CSS but then I’ll have to do it for all the resolutions and devices. I had read ion-pane adjust the div's height to fit the view. But there seem to be some issue with it. Whenever I’m using ion-content or ion-pane within ion-slide, the div seem to disappear. Could anyone explain to me what I’m doing wrong here?