The home page for my site is looking like this so far. The only problem is that I can't get the buttons aligned horizontally.

The setup is a grid container containing 3 group items. Within each group is a H3 heading, paragraph, list items and a button. The buttons at the bottom should all line up.

There aren't many options in the actual editor for things like this. I've set the buttons to be centre justified and I've set the vertical alignment to "bottom".

I don't mind adding custom CSS in the sidebar for the blocks, but it would need to be responsive.