testbed/Textualize__textual/docs/examples/styles/grid.css

Screen {
    layout: grid;
    grid-size: 3 4;
    grid-rows: 1fr;
    grid-columns: 1fr;
    grid-gutter: 1;
}

Static {
    color: auto;
    background: lightblue;
    height: 100%;
    padding: 1 2;
}

#static1 {
    tint: magenta 40%;
    row-span: 3;
    column-span: 2;
}