Section leftaligned

I would like two wide columns (on the total width of the dashboard) - the first should start leftaligned… unfortunately I can’t do it with either sections or tiles…

type: horizontal-stack
cards:
  - type: custom:button-card
    name: Photovoltaik heute  - KWh
    show_state: false
    show_units: true
    show_name: true
    show_icon: true
    styles:
      card:
        - height: 80px
        - width: 720px
        - background-color: yellow
      icon:
        - color: yellow
      name:
        - color: darkblue
        - font-size: 30px
      state:
        - font-size: 80px
        - color: yellow
  - type: custom:button-card
    name: Photovoltaik Monat  - KWh
    show_state: false
    show_units: true
    show_name: true
    show_icon: true
    styles:
      card:
        - height: 80px
        - width: 720px
        - background-color: blue
      icon:
        - color: yellow
      name:
        - color: darkblue
        - font-size: 30px
      state:
        - font-size: 80px
        - color: yellow

Post an MS paint picture of what you need.