#back{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url(../img/plantilla/back.jpg);
    background-size: cover;
    overflow: hidden;
    z-index: -1;
    opacity: 0.8;

}

#banner1{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url(../img/plantilla/procesoelectoral_antes.jpg);
    background-size: cover;
    overflow: hidden;
    z-index: -1;

}

#banner2{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url(../img/plantilla/procesoelectoral_despues.jpg);
    background-size: cover;
    overflow: hidden;
    z-index: -1;

}


.custom-file-label::after {
    content: "Seleccionar" !important; }