Select .scroll class of <ion-content> for a single template (Grid-Flexbox)?

Hi Guys!
I’m trying to create div elements with Boxes That Fill Height of the screen automatically using Ionic Grid.
This is my markup:


Wetter



Wind



when I define flexbox for .scroll class ,it applies to every template on the Application. How can I do the styling for a single template ?
To make the question simple : How to define a “FLEXBOX” on
to create div elements with Boxes That Fill Height
of the screen automatically using Ionic Grid?
Thanks in advance! :smiley:

Can you please create a codepen of it to better understand the problem statement?

https://codepen.io/mhartington/embed/ItpgG?height=300&slug-hash=ItpgG&default-tab=result&host=http%3A%2F%2Fcodepen.io#result-box
This alters .scroll class on every template. How do I achieve it only for a single page/template?