.botao.botao-comprar.principal::before {
    background: #008080 !important;
    color: white !important;
}

.botao.botao-comprar.principal::after {
    background: #008080 !important;
    color: white !important;
}

.botao.botao-comprar.principal:hover {
    background: #008080 !important;
    color: white !important;
}

.botao.botao-comprar.principal:focus {
    background: #008080 !important;
    color: white !important;
}