Ionic col icon-button problem when changing size

Hi there,

currently I am resizing a grid. I want to use the size col-2 but when settingit, it looks like this:

As you can see, not the entire icon is visible.
When using col-3 (which is to large), the icon looks like it should:

Is there a way to let the icon look like in col-3 but with the coloum size col-2 or change the way in a different way (like width: 10%; in css (which isn´t working for me))??
Add: the grid is positioned on a card, maybe this creates some problems.