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

#vertical-layout {
    layout: vertical;
    background: darkmagenta;
    height: auto;
}

#horizontal-layout {
    layout: horizontal;
    background: darkcyan;
    height: auto;
}

Static {
    margin: 1;
    width: 12;
    color: black;
    background: yellowgreen;
}