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

#zero-opacity {
    text-opacity: 0%;
}

#quarter-opacity {
    text-opacity: 25%;
}

#half-opacity {
    text-opacity: 50%;
}

#three-quarter-opacity {
    text-opacity: 75%;
}

#full-opacity {
    text-opacity: 100%;
}

Static {
    height: 1fr;
    text-align: center;
    text-style: bold;
}