Ion-content margins

In my application I have 2 components which are implemented in app.html (these components will have animations. That’s why i have in app.html. One of them is header and the other one is footer.)

So center of these views are pages which I can switch etc. I did margin-top for them and it works (pages change their sizes and they are not covered by header.) But there is the problem with margin-bottom. It doesn’t work.

Is any possibility to do it?