Dashboard - Remove Padding between Cards with Layout-Card and/or Button-Card?

I have several Custom Layout-Cards set up as Grid, each containing MiniGraph, followed by a Set of six Custom Button-Cards. I want to make each Set to look as one Card, therefore remove the paddings, to get something like in this Mockup:

Instead of installing another Custom Card (probably Card Mod would to the Trick?), i would love to make it without that, i want to keep HA as slim as possible.
For the Layout-Card, i already set:

margin: 0px 0px 0px 0px
padding: 0px

When playing around with Margin/Padding within Button-Card, never overrides the Card-Paddings themself.

I Think i read somewhere, that either Layout-Card or Button-Card can be configured to be displayed without any Padding. Have i been dreaming, or can’t i just find the proper Options? :wink:

stack-in-card

I would have loved to achieve it without another custom card, e.g. using custom_layout…
But well - it works flawlessly and easy :slight_smile: Thanks!

Am struggling with the performance of this card! Very slow…unusable at this point. LMK if any ideas!