.calculadoraMotorflash.loading {
    position: relative;
    opacity: 0.6;
    pointer-events: none;
}
.calculadoraMotorflash.loading::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    border: 4px solid #ccc;
    border-top: 4px solid #000;
    border-radius: 50%;
    animation: 0.8s linear infinite spin;
    z-index: 10;
}
@keyframes spin {
    0% {
        transform: rotate(0);
    }
    100% {
        transform: rotate(360deg);
    }
}