.flipdown .rotor-group:nth-child(1) .rotor-group-heading:before {
    content: attr(data-before);
}

.flipdown .rotor-group:nth-child(2) .rotor-group-heading:before {
    content: attr(data-before);
}

.flipdown .rotor-group:nth-child(3) .rotor-group-heading:before {
    content: attr(data-before);
}

.flipdown .rotor-group:nth-child(4) .rotor-group-heading:before {
    content: attr(data-before);
}