You can add a div, with class flexcontainer around the two cards or the layoutgrid...
You can add class flexcontainer to th two cards and give minimum width e.g.
width: 300px;
flex-direction: column;
align-items: stretch;
Then a flexcontainer around your header & text to group them
Then a container around the button with styles:
margin-top: auto;
align-items: flex-end;