osgos_postinstall/build/lib/textualconf/styles.tcss

Screen {
    align: center middle;
    background: #000;
    color: #fff;
}

Header {
    dock: top;
    background: #000;
    color: #fff;
    border-bottom: solid #fff;
}

Footer {
    dock: bottom;
    background: #000;
    color: #fff;
    border-top: solid #fff;
}

.chooseBlock {
    padding: 1;
    min-width: 65;
}

.centerBlock {
    width: auto;
    height: auto;
    align: center middle;
}

.chooseBlock__title {
    margin: 1 2;
    text-align: center;
    width: 100%;
}

Button {
    margin: 1 2;
    width: 100%;

    background: #000;
    color: #fff;
    border: solid #fff;
}

Input {
    margin: 1 2;
    width: 100%;

    background: #000;
    color: #fff;
    border: solid #fff;
}

CustomRadioButton {
    color: #fff;
    background: #000;
    width: 100%;
}

RadioSet{
    border: none;
    background: #000;
    width: 100%;
}