Make it easy to align cards
If I use <enter> to create a new card, it is created exactly underneath the previous card. But if I move / change a card it's almost impossible to align it again to the previous cards.
Idea: Use a snap function while dragging the card to snap it to other cards or a grid of (for example) 10 x 10 px.
Idea 2: Use this snap function for resizing a card too