Testing in 2025.11.3, card-mod 3.4.6 with same code.
It still gives same result as when it was posted.
With card-mod 4.0.0 it looks differently, a border & background are added to mod-card which is wrong:
Of course, with 4.0.0 you may apply card-mod directly to vertical-stack (i.e. w/o mod-card) as was described in Release notes (a recommended way if you write a code anew):
type: horizontal-stack
cards:
- ...
card_mod:
style: |
div#root {
flex-wrap: wrap;
justify-content: center;
}
div#root > * > :first-child {
min-width: 50px;
max-width: 50px;
}
But, as I said earlier, old styles with mod-card should keep working.
Why mod-card got a border & background in 4.0.0 - I will ask in the main card-mod thread.
Also (might be useful), if you need to allocate buttons in a special way like this:
consider this simple way.


