background-color: rgb(40 240 83);
      }
    </style>

    <style class="editable">
      .grid {
        display: grid;
        grid-template-columns: repeat(9, 1fr);
        grid-template-rows: repeat(4, minmax(100px, auto));
      }

      .item {
        display: grid;
        grid-column: 2 / 7;
        grid-row: 2 / 4;
        grid-template-columns: subgrid;
        grid-template-rows: repeat(3, 80px);
      }

      .subitem {
        grid-column: 3 / 6;
        grid-row: 1 / 3;
      }
    </style>