.btn-rca {
    color: #ffffff;
    background-color: #16477c;
    border-color: #16477c;
}

.btn-cinza {
    color: #ffffff;
    background-color: #8f8f8f;
    border-color: #8f8f8f;
}

.btn-preto {
    color: #ffffff;
    background-color: #000000;
    border-color: #000000;
}