Changing header padding

Configuration Frontend
1

Hi there!
I’m trying to decrease the padding of the header in the custom stack in card, but I’m not being successful in my task!
Can you provide me some guidance?
I was able to change css for other cards but not for this one!

Thanks a lot for your help!!

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image954×648 70.5 KB

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image1890×827 147 KB

2 
card_mod:
          style:
            $: |
              h1.card-header {
                font-size: 16px;
                padding-top: 1px;
                padding-bottom: 18px; 
                color:var(--secondary-text-color);
              }

I think this is what you need