Extend card background color to screen width

Configuration Frontend
1

Is there a way that I can make the background color of the header card fill the screen with?

IMG_0883
IMG_08831290×2796 271 KB

IMG_0884
IMG_08841290×909 100 KB 

type: custom:button-card
        name: Lys
        style: |
          ha-card { 
            background: var(--background-color-2) !important;
          }