Ionic - Vuejs, page not scrolling, at all

Hi peeps! I followed the tutorial from the ionic blog to set up a vue-ionic project.

The thing is, I’m not able to scroll… at all?
I just added some cards to try out a few things, and realised I can’t scroll down so I can’t see all of my content, why is this?

    <ion-card-header style="text-align: center;">


I’ve just copy-pasted this card multiple times, not done anything else, does anyone know what’s causing this issue?