.container-fluid {
    position: relative;
}

.content-efecto-img-scroll {
    width: 100%;
    height: 90vh;
    position: absolute;
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    justify-content: center;
    align-items: center;
    align-content: center;
    background-size: 80vh auto;
    background-repeat: no-repeat;
    background-position: center;
    transition: background-size 0.1s ease-in-out;
}


.content-efecto-img-scroll.active {
    background-size: 150%;
}

.centrar {
    display: flex;
    justify-content: center;
    align-items: center;
}

.mascara-oscura {
    background-color: #00000069;
    width: 100%;
    height: 90vh;
    position: absolute;
    z-index: 0;
}