QGroupBox#actor1::title {
    background-image: url(:/actor1icon);
    background-position: top left;
    background-repeat: no-repeat;
    background-color: palette(window);
}

QGroupBox#actor2::title {
    background-image: url(:/actor2icon);
    background-position: top left;
    background-repeat: no-repeat;
    background-color: palette(window);
}

QGroupBox#actor3::title {
    background-image: url(:/actor3icon);
    background-position: top left;
    background-repeat: no-repeat;
    background-color: palette(window);
}

QGroupBox#actor4::title {
    background-image: url(:/actor4icon);
    background-position: top left;
    background-repeat: no-repeat;
    background-color: palette(window);
}