.banner-servicio {
    height: 320px;
    position: relative;
}


.banner-servicio::before {
    content: "";
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.3);
    z-index: 1;
}


.banner-servicio > .container {
    position: relative;
    z-index: 2;
    color: white;
}